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TJI® 110, TJI® 210, TJI® 230, TJI® 360, AND TJI® 560 JOISTSFeaturing Trus Joist® TJI® Joists for Floor and Roof Applications
• Uniform and Predictable
• Lightweight for Fast Installation
• Resource Efficient
• Resists Bowing, Twisting, and Shrinking
• Significantly Reduces Callbacks
• Available in Long Lengths
• Limited Product Warranty
#TJ-4500 SPECIFIER’S GUIDE
Including 18" and 20" TJI® joists
WESTERNCANADA
2Trus Joist® TJI Joist® Specifier's Guide (W. Canada) TJ-4500 | November 2018
This guide features TJI® joists in the following sizes:Depths: 9½", 117⁄8", 14", 16", 18", and 20"Flange Widths: 1¾", 21⁄16", 25⁄16", and 3½"Flange height and thickness vary by series; see the appropriate sections of this guide for specific sizes and relevant technical information:
Why Choose Trus Joist® TJI® Joists?• Engineered for strength and consistency
• Efficient installation saves time and labor
• Longer lengths allow more versatile floor plans
• Less jobsite waste
• Fewer red tags and callbacks
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888.453.8358
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PRODUCT STORAGE
Now more than ever builders need solutions that really deliver. That’s why Trus Joist® TJI® joists are designed to give you more — longer lengths, easier installation, higher span values, better strength-to-weight ratios, and faster cycle times.
TJI® joists are also available in deeper depths that are suitable for heavier-duty loads, such as those in multi-family structures and light commercial buildings.
Use support blocks (6x6 or larger) at 10' on-centre to keep bundles out of mud and water
Align stickers (2x3 or larger) directly over support blocks
Protect product from sun and water
CAUTION: Wrap is slippery when wet or icy
The products in this guide are readily available through our nationwide network of distributors and dealers. For more information on other applications or other Trus Joist® products, contact your Weyerhaeuser representative.
TABLE OF CONTENTS
Code Evaluations: CCMC 13132-R, CCRR 0222C
Some sizes may not be available in your region. 22" and 24" deep TJI® Joists are also available in some areas; contact your Weyerhaeuser representative for availability.
Section 1: Design information for 9½"–16" TJI® joists
Section 2: Design information for 18" and 20" TJI® joists
Section 3: Framing details and design information for all joist depths in this guide
Fire-Safe Construction 3Tips for Preventing Floor Noise 3Floor Performance and TJ-Pro™ Rating 4–5
SECTION 1: 9½"–16" TJI® JoistsDesign Properties 6Floor Span Tables 7–9Cantilevers 10–11Roof Span Table 12Roof Load Table 13Framing Connectors 14–15Allowable Holes 16
SECTION 2: 18"–20" TJI® JoistsDesign Properties 17Floor Span Tables 17–18Roof Span Table 19Roof Load Table 19Cantilevers 20–21Framing Connectors 22–23Allowable Holes 24
SECTION 3: Design Information for All JoistsTJI® Joist Floor Framing 25Floor Details 26Rim Board Selection and Installation 27Roof Framing 28Roof Details 29–30Cut Length Calculation 31Material Weights and Conversion Tables 31
3Trus Joist® TJI Joist® Specifier's Guide (W. Canada) TJ-4500 | November 2018
FIRE-SAFE CONSTRUCTION
TIPS FOR PREVENTING FLOOR NOISE
For more information and tips on how to prevent floor noise, refer to the Weyerhaeuser Prevention and Repair of Floor System Squeaks Technical Resource Sheet, 9009,
or contact your Weyerhaeuser representative.
* Weyerhaeuser recommends using solvent-based subfloor adhesives that meet ASTM D3498 (AFG-01) performance standards. When latex subfloor adhesive is required, careful selection is necessary due to a wide range of performance between brands.
Avoid “Shiners”
Shiner
Exercise care when nailing. Nails that barely hit the joists (shiners) do not hold the panel tight to the joist and should be removed. If left in, the nails will rub against the side of the joist when the panel deflects.
Prevent Shrinkage
Keep building materials dry, and properly glue floor panels to the joists. Panels that become excessively wet during construction shrink as they dry. This shrinkage may leave gaps that allow the panel to move when stepped on.
Movement
Gaps develop as sheathing shrinks
Properly Seat Each Joist in Hanger
Seat the joist tight to the bottom of the hanger. When using hangers with tabs, bend the flange tabs over and nail to the TJI® joist bottom flange. Placing a dab of sublfoor adhesive* in the seat of the hanger prior to installing the joist can reduce squeaks.
Dab subfloor adhesive in seat of hanger*
Bend tab and fasten
Trus Joist® TJI® joists are structurally uniform and dimensionally stable, and they resist shrinking and twisting. This helps prevent gaps from forming around the nails between the joist and the floor panels—gaps that can potentially cause squeaks or other floor noise. Using TJI® joists can help you build a quieter floor, but only if the entire floor system is installed properly. This is because other components of the floor system, such as hangers, connectors, and nails can be a source of floor noise.
Use Adhesive and Special Nailing When Needed
Nail interior partitions to the joists when possible. If the wall can be nailed only to the floor panel, run a bead of adhesive* under the wall and either cross nail, nail through and clinch tight, or screw tightly into the wall from below.
Construction adhesive
For more information on fire assemblies and fire-safe construction, please refer to the Weyerhaeuser Fire-Rated Assemblies and Sprinkler Systems Guide, TJ-1500, or visit weyerhaeuser.com/woodproducts.
One-Hour Assembly for Rated Construction
1
23 4
Double Layer
1. 48/24 tongue-and-groove, span-rated sheathing (Exposure 1), glued with a subfloor adhesive and nailed
2. Two layers of ½" Type C gypsum board or two layers 5⁄8" Type X gypsum board
3. TJI® joist
Optional when used with resilient channels (not shown): 3½"-thick glass fibre insulation or non-combustible insulation.
Note: Resilient channels (with optional insulation) may be installed between the joists and gypsum board if improved STC and IIC sound ratings are desired.
Intertek listings: WNR FCA 60-01 (no channels) WNR FCA 60-03 (with channels)
1
34
2
5
Suggested Minimum Membrane Protection for Unrated Construction
Single Layer
1. 48/24 tongue-and-groove, span-rated sheathing (Exposure 1)
2. TJI® joist
3. Single-layer of ½", unrated gypsum board
4. Resilient channels at 16" on-centre (optional)
5. Optional when used with resilient channels: Minimum 3½"-thick glass fibre insulation or non-combustible insulation that is rated R-30 or less
For over 40 years, prefabricated wood I-joists and other Weyerhaeuser building products have established a record of safe and reliable performance in millions of structures. Many of these structures, such as one- or two-family residential dwellings, do not require specific fire-resistance ratings per building codes but may require unrated membrane protection. The information below is intended to help you specify and install Trus Joist® products with fire safety in mind.
4Trus Joist® TJI Joist® Specifier's Guide (W. Canada) TJ-4500 | November 2018
TJ-PRO™ RATING AND FLOOR PERFORMANCE
High-End LuxuryDecision-drivers for builders in this demographic generally revolves around Image and Efficiency. In our experience, homeowners in this category expect point values of 45 and greater. Only TJ-Pro Rating can validate that your quality and your brand are not being compromised through changes in floor system design. If you look to improve efficiency by using different assemblies, make sure your TJ-Pro Rating remains relatively consistent.
Entry-LevelMuch of the focus in this demographic revolves around Economy (cost) and Efficiency concerns. Every dollar counts and cash conversion cycles are monitored closely so there is usually pressure around the construction schedule. TJ-Pro Rating is used in this market to make sure builders are not “overbuilders” by keeping the floor performance “in-check”.
Move-Up / Mid-LevelBuilders in this demographic are generally driven by Efficiency and Image. With constant changes to remain “fresh” and competitive, floor plans can be numerous and contain many options. Use TJ-Pro Rating to maintain consistency in floor feel across the base-model plan, all available options, throughout your subdivisions, and across your business.
A poor performing floor can harm a builder’s image, compromise build efficiency, and cost money — regardless of demographic. That’s why we developed TJ-Pro Rating. For over 50 years builders have looked to the Trus Joist name for guidance on floor performance, and our decades of proven success with TJ-Pro Rating is one of the biggest reasons why.
How TJ-Pro Rating Works: Point values up to 65 are assigned using complex algorithms based on field and laboratory research conducted on over 600 floor system assemblies. It also factors in the variables listed under Key Factors Affecting Performance shown on page 5. Ranges can then be regularly correlated to performance expectations for the builder demographics listed below.
FLOOR PERFORMANCE
RATING 6525
35 5545
DIFFERENTIATIONRELIABILITYCONSISTENCYECONOMY
5Trus Joist® TJI Joist® Specifier's Guide (W. Canada) TJ-4500 | November 2018
TJ-PRO™ RATING AND FLOOR PERFORMANCE
Enhanced OptionsBuilder sales teams may be able to address a buyer’s previous dissatisfaction with underperforming floor systems by offering upgrades, particularly in competitive subdivisions. Use base models with standard floor systems (and performance) to compete but consider an “improved floor option” to both create up-sell opportunities and address those homeowners who may be more sensitive to floor feel than most.
BY THE NUMBERSToday’s consumer understands technology. Explain how your business utilizes the industry’s leading design tool that goes beyond the building codes’ static deflection and looks at the entire floor system.
At 45 points, customer satisfaction is 84%. At 65 points,
it’s nearly 100%.
6525
CU
STOM E R S AT I SFACTION
28%
••
•63%•••84%•••96%•••
99%
TJ-PRO™ RATING
PERCEPTIONFREQUENCY
Frequency is the number of waves
per second created when you step on
the floor. Generally, low frequencies are
uncomfortable. The less stiff the joist, the lower the frequency.
Damping is the ability of the floor sytem to “absorb” the wave that is introduced. The faster the wave is absorbed, the more solid the floor will feel.
How a floor feels is highly variable from one person
to another. The proprietary algorithm behind TJ-Pro™
Rating takes this into account. TJ-Pro Ratings
are correlated to customer satisfaction which takes
the guesswork out of floor system design.
DAMPING
Basic Stiffness is a combination of joist depths and span.
Composite Action — Careful nailing in conjunction with construction adhesives increases basic stiffness.
Continuity — Continuous joists over several supports generally perform better than simple spans. Care must be taken if the joists continue into another occupancy.
Joist Spacing and Deck Stiffness —Reduced spacing or increased deck thickness generally improves floor performance.
Ceilings directly applied to the bottom edge of the floor members, or equivalent 1x or 2x strapping, is a performance enhancement.
Beams — Floor systems supported by steel or wood beams tend to feel less stiff than those supported by solid bearing walls.
Bridging or Blocking can be a contributor to improved floor performance.
Non-bearing Partition Walls dampen vibration and improve floor performance when installed transverse to the floor joists.
Mass reduces damping in a floor system causing a decrease in floor performance. This impact is more noticeable as span lengths increase.
Key Factors Affecting Performance
TJ-Pro Rating is featured in these design software platforms.
Autodesk® Revit® linked to Forte®
6Trus Joist® TJI Joist® Specifier's Guide (W. Canada) TJ-4500 | November 2018
SECTION 1: 9½"–16" TJI® JOISTS
Design Properties
(1) Caution: Do not increase joist moment design properties by a repetitive-member-use factor.(2) See detail W on page 25 for web stiffener requirements and nailing information.
General Notes■ Factored resistances are based on Limit States Design per CSA O86.■ Factored reaction includes all loads on the joist.■ Factored shear is computed at the inside face of supports and includes all loads on the span(s).
Factored shear resistance may sometimes be increased at interior supports. For more information contact your Weyerhaeuser representative.
■ The following formulas approximate the simple span uniform load deflection of Δ (inches):
For TJI® 110, 210, 230, and 360 Joists
Δ = +22.5 wL4 El
2.67 wL2 d x 105
For TJI® 560 Joists
Δ = +22.5 wL4 El
2.29 wL2 d x 105
w = uniform load in pounds per linear foot L = span in feet
d = out-to-out depth of the joist in inches El = value from table above
TJI® joists are intended for dry-use applications
Some TJI® joist series may not be available
in your region. Contact your Weyerhaeuser representative for
information.
TJI® 110 joists
1¾"
3⁄8"9½"
117⁄8" 14"
1¼"–13⁄8"
1¼"–13⁄8"
TJI® 230 joists
3⁄8"
25⁄16"
9½" 117⁄8" 14" 16"
TJI® 360 joists
3⁄8"
25⁄16"
13⁄8"9½"
117⁄8" 14" 16"
TJI® 560 joists
7⁄16"
3½"
13⁄8"9½"
117⁄8" 14" 16"
1. All blocking, hangers, rim boards, and rim joists at the end supports of the TJI® joists must be completely installed and properly nailed.
2. Lateral strength, like a braced end wall or an existing deck, must be established at the ends of the bay. This can also be accomplished by a temporary or permanent deck (sheathing) fastened to the first 4 feet of joists at the end of the bay.
3. Safety bracing of 1x4 (minimum) must be nailed to a braced end wall or sheathed area (as in note 2) and to each joist. Without this bracing, buckling sideways or rollover is highly probable under light construction loads—such as a worker or one layer of unnailed sheathing.
4. Sheathing must be completely attached to each TJI® joist before additional loads can be placed on the system.
5. Ends of cantilevers require safety bracing on both the top and bottom flanges.
6. The flanges must remain straight within a tolerance of ½" from true alignment.
DO NOT walk on joists until braced.
INJURY MAY RESULT.
DO NOT walk on joists that are lying flat.
DO NOT stack building materials on
unsheathed joists. Stack only over beams or walls.
WARNING NOTES: Lack of proper bracing during construction can result in serious accidents. Observe the following guidelines:
This section contains design information for 9½"–16" deep Trus Joist® TJI® joists. These standard-size TJI® joists are readily available through your local Weyerhaeuser dealer or distributor.
Offered with the flange sizes shown below, they come in lengths up to 60' (in 1' increments).
21⁄16"
TJI® 210 joists
3⁄8"
9½" 117⁄8" 14" 16"
1¼"–13⁄8"
WARNINGJoists are unstable
until braced laterally
Bracing Includes: •Blocking •Hangers •Rim Board •Sheathing •Rim Joist •Strut Lines
Depth TJI®Joist
Weight(lbs/ft)
Joist Only El x 106
(lbs-in.2)
Factored Resistances — Standard Term
Maximum ResistiveMoment(1)
(ft-lbs)
Maximum Vertical Shear (lbs)
1¾" End Reaction (lbs)
3½" Intermediate Reaction (lbs)
5¼" Intermediate Reaction (lbs)
No Web Stiffeners
With Web Stiffeners(2)
No Web Stiffeners
With Web Stiffeners(2)
No Web Stiffeners
With Web Stiffeners(2)
9½"
110 2.3 157 4,160 1,925 1,435 NA 3,055 N.A. 3,705 NA210 2.6 186 4,990 2,100 1,585 NA 3,385 N.A. 4,050 NA230 2.7 206 5,540 2,100 1,675 NA 3,800 N.A. 4,405 NA360 2.7 249 7,965 2,250 1,705 NA 3,885 N.A. 4,740 NA560 3.6 378 12,235 2,635 1,995 NA 4,735 NA 5,455 NA
117⁄8"
110 2.5 267 5,255 2,460 1,435 1,885 3,055 3,575 3,705 4,225210 2.8 315 6,310 2,610 1,585 2,105 3,385 3,905 4,050 4,570230 3.0 347 7,010 2,610 1,675 2,190 3,800 4,320 4,405 4,925360 3.0 419 10,280 2,690 1,705 2,225 3,885 4,400 4,740 5,255560 4.0 636 15,795 3,235 1,995 2,680 4,735 5,425 5,455 6,140
14"
110 2.8 392 6,220 2,935 1,435 1,885 3,055 3,575 3,705 4,225210 3.1 462 7,470 3,070 1,585 2,105 3,385 3,905 4,050 4,570230 3.3 509 8,300 3,070 1,675 2,190 3,800 4,320 4,405 4,925360 3.3 612 12,200 3,085 1,705 2,225 3,885 4,400 4,740 5,255560 4.2 926 18,755 3,770 1,995 2,680 4,735 5,425 5,455 6,140
16"
210 3.3 629 8,550 3,455 1,585 2,105 3,385 3,905 4,050 4,570230 3.5 691 9,495 3,455 1,675 2,190 3,800 4,320 4,405 4,925360 3.5 830 13,980 3,455 1,705 2,225 3,885 4,400 4,740 5,255560 4.5 1,252 21,495 4,280 1,995 2,680 4,735 5,425 5,455 6,140
7Trus Joist® TJI Joist® Specifier's Guide (W. Canada) TJ-4500 | November 2018
FLOOR SPAN TABLES
See page 8 for General Notes.
How to Use These Tables1. Determine the subflooring thickness and applicable live and dead loads.
2. Determine whether the ceiling will be directly applied and what the span condition is (simple or continuous).
3. Select on-centre spacing.
4. Scan down the column until you meet or exceed the span of your application.
5. Select TJI® joist and depth.
Depth TJI®
Directly Applied Ceiling No Directly Applied CeilingSimple or Continuous Span Continuous Span Only Simple or Continuous Span Continuous Span Only12" o.c. 16" o.c. 19.2" o.c. 12" o.c. 16" o.c. 19.2" o.c. 12" o.c. 16" o.c. 19.2" o.c. 12" o.c. 16" o.c. 19.2" o.c.
40 PSF Live Load / 10 PSF Dead Load
9½"
110 15'-9" 14'-10" 14'-4" 17'-0" 16'-1" 15'-7" 15'-3" 14'-5" 13'-11" 16'-6" 15'-7" 15'-1"210 16'-1" 15'-3" 14'-8" 17'-6" 16'-6" 15'-11" 15'-8" 14'-9" 14'-3" 17'-0" 16'-0" 15'-6"230 16'-4" 15'-5" 14'-11" 17'-9" 16'-9" 16'-2" 15'-11" 15'-0" 14'-6" 17'-3" 16'-3" 15'-9"360 16'-10" 15'-11" 15'-4" 18'-5" 17'-3" 16'-8" 16'-5" 15'-6" 14'-11" 17'-10" 16'-9" 16'-3"560 18'-2" 17'-0" 16'-5" 20'-2" 18'-8" 17'-10" 17'-9" 16'-8" 16'-1" 19'-7" 18'-2" 17'-5"
117⁄8"
110 17'-7" 16'-8" 16'-1" 19'-5" 18'-1" 17'-6" 17'-1" 16'-1" 15'-7" 18'-8" 17'-5" 16'-10"210 18'-1" 17'-1" 16'-6" 20'-1" 18'-8" 17'-11" 17'-7" 16'-6" 16'-0" 19'-4" 17'-11" 17'-4"230 18'-5" 17'-4" 16'-9" 20'-5" 19'-0" 18'-2" 17'-10" 16'-10" 16'-3" 19'-8" 18'-3" 17'-7"360 19'-2" 17'-10" 17'-2" 21'-3" 19'-9" 18'-10" 18'-6" 17'-4" 16'-9" 20'-6" 19'-0" 18'-2"560 21'-0" 19'-5" 18'-6" 23'-3" 21'-7" 20'-7" 20'-5" 18'-10" 18'-0" 22'-8" 20'-11" 20'-0"
14"
110 19'-6" 18'-2" 17'-6" 21'-7" 20'-2" 19'-4" 18'-9" 17'-6" 16'-11" 20'-8" 19'-3" 18'-5"210 20'-2" 18'-9" 17'-11" 22'-4" 20'-9" 19'-11" 19'-5" 18'-0" 17'-4" 21'-5" 19'-11" 19'-1"230 20'-6" 19'-1" 18'-3" 22'-9" 21'-2" 20'-3" 19'-9" 18'-4" 17'-8" 21'-11" 20'-4" 19'-5"360 21'-3" 19'-9" 18'-10" 23'-7" 21'-11" 20'-11" 20'-7" 19'-1" 18'-3" 22'-10" 21'-1" 20'-2"560 23'-4" 21'-7" 20'-7" 25'-10" 23'-11" 22'-10" 22'-8" 20'-11" 20'-0" 25'-2" 23'-3" 22'-2"
16"
210 21'-11" 20'-5" 19'-6" 24'-4" 22'-8" 21'-8" 21'-1" 19'-7" 18'-9" 23'-4" 21'-8" 20'-9"230 22'-4" 20'-9" 19'-10" 24'-9" 23'-0" 22'-1" 21'-6" 19'-11" 19'-1" 23'-10" 22'-1" 21'-2"360 23'-2" 21'-6" 20'-7" 25'-8" 23'-10" 22'-10" 22'-5" 20'-9" 19'-10" 24'-10" 23'-0" 21'-11"560 25'-5" 23'-6" 22'-5" 28'-2" 26'-1" 24'-10" 24'-8" 22'-9" 21'-9" 27'-5" 25'-3" 24'-1"
40 PSF Live Load / 30 PSF Dead Load
9½"
110 15'-9" 14'-10" 14'-4" 17'-0" 15'-10" 14'-6" 15'-3" 14'-5" 13'-11" 16'-6" 15'-7" 14'-6"210 16'-1" 15'-3" 14'-8" 17'-6" 16'-6" 15'-10" 15'-8" 14'-9" 14'-3" 17'-0" 16'-0" 15'-6"230 16'-4" 15'-5" 14'-11" 17'-9" 16'-9" 16'-2" 15'-11" 15'-0" 14'-6" 17'-3" 16'-3" 15'-9"360 16'-10" 15'-11" 15'-4" 18'-5" 17'-3" 16'-8" 16'-5" 15'-6" 14'-11" 17'-10" 16'-9" 16'-3"560 18'-2" 17'-0" 16'-5" 20'-2" 18'-8" 17'-10" 17'-9" 16'-8" 16'-1" 19'-7" 18'-2" 17-5"
117⁄8"
110 17'-7" 16'-8" 16'-1"(1) 19'-5" 17'-10" 16'-3"(1) 17'-1" 16'-1" 15'-7"(1) 18'-8" 17'-5" 16'-3" (1)
210 18'-1" 17'-1" 16'-6" 20'-1" 18'-8" 17'-10" (1) 17'-7" 16'-6" 16'-0" 19'-4" 17'-11" 17'-4" (1)
230 18'-5" 17'-4" 16'-9" 20'-5" 19'-0" 18'-2" 17'-10" 16'-10" 16'-3" 19'-8" 18'-3" 17'-7"360 19'-2" 17'-10" 17'-2" 21'-3" 19'-9" 18'-10" 18'-6" 17'-4" 16'-9" 20'-6" 19'-0" 18'-2"560 21'-0" 19'-5" 18'-6" 23'-3" 21'-7" 20'-7" 20'-5" 18'-10" 18'-0" 22'-8" 20'-11" 20'-0"
14"
110 19'-6" 18'-2" 17'-6"(1) 21'-7" 19'-5"(1) 17'-9"(1) 18'-9" 17'-6" 16'-11"(1) 20'-8" 19'-3"(1) 17'-9"(1)
210 20'-2" 18'-9" 17'-11"(1) 22'-4" 20'-9"(1) 19'-5"(1) 19'-5" 18'-0" 17'-4"(1) 21'-5" 19'-11" 19'-1" (1)
230 20'-6" 19'-1" 18'-3" 22'-9" 21'-2" 20'-3" (1) 19'-9" 18'-4" 17'-8" 21'-11" 20'-4" 19'-5" (1)
360 21'-3" 19'-9" 18'-10" 23'-7" 21'-11" 20'-11" (1) 20'-7" 19'-1" 18'-3" 22'-10" 21'-1" 20'-2" (1)
560 23'-4" 21'-7" 20'-7" 25'-10" 23'-11" 22'-10" 22'-8" 20'-11" 20'-0" 25'-2" 23'-3" 22'-2"
16"
210 21'-11" 20'-5" 19'-6"(1) 24'-4" 22'-8"(1) 19'-11"(1) 21'-1" 19'-7" 18'-9"(1) 23'-4" 21'-8" (1) 19'-11"(1)
230 22'-4" 20'-9" 19'-10"(1) 24'-9" 23'-0" 21'-11" (1) 21'-6" 19'-11" 19'-1" 23'-10" 22'-1" 21'-2" (1)
360 23'-2" 21'-6" 20'-7"(1) 25'-8" 23'-10"(1) 22'-5"(1) 22'-5" 20'-9" 19'-10"(1) 24'-10" 23'-0" 21'-11" (1)
560 25'-5" 23'-6" 22'-5" 28'-2" 26'-1" 24'-10" (1) 24'-8" 22'-9" 21'-9" 27'-5" 25'-3" 24'-1"
5⁄8" OSB Subfloor (Glue-nailed)—Vibration-Controlled, Standard Term
To more accurately predict floor performance, use our TJ-Pro™ Ratings
40 PSF Live Load / 30 PSF Dead LoadTJI® 12" o.c. 16" o.c. 19.2" o.c.110
Not Required
18'-8" 15'-6"210 20'-8" 17'-3"230 23'-3" 19'-4"360 23'-9" 19'-9"560 Not Required 24'-2"
(1) Web stiffeners are required at intermediate supports of continuous-span joists when the intermediate bearing length is less than 5¼" and the span on either side of the intermediate bearing is greater than the following spans:
■ Bold italic spans indicate floors that would meet National Building Code of Canada (NBCC) vibration criteria but would be considered by 35% of the population to have marginal or unacceptable performance.
8Trus Joist® TJI Joist® Specifier's Guide (W. Canada) TJ-4500 | November 2018
FLOOR SPAN TABLES
See page 7 for how to use these tables.
To more accurately predict floor performance, use our TJ-Pro™ Ratings
Depth TJI®
Directly Applied Ceiling No Directly Applied CeilingSimple or Continuous Span Continuous Span Only Simple or Continuous Span Continuous Span Only
12" o.c. 16" o.c. 19.2" o.c. 24" o.c. 12" o.c. 16" o.c. 19.2" o.c. 24" o.c. 12" o.c. 16" o.c. 19.2" o.c. 24" o.c. 12" o.c. 16" o.c. 19.2" o.c. 24" o.c.40 PSF Live Load / 10 PSF Dead Load
9½"
110 16'-6" 15'-7" 14'-10" 13'-8" 17'-11" 16'-11" 16'-4" 15'-0" 16'-1" 15'-2" 14'-7" 13'-8" 17'-5" 16'-5" 15'-10" 15'-0"210 16'-11" 16'-0" 15'-5" 14'-5" 18'-6" 17'-4" 16'-9" 15'-11" 16'-6" 15'-7" 15'-0" 14'-5" 17'-10" 16'-10" 16'-3" 15'-7"230 17'-2" 16'-3" 15'-8" 14'-11" 18'-10" 17'-7" 17'-0" 16'-3" 16'-9" 15'-10" 15'-3" 14'-7" 18'-3" 17'-2" 16'-6" 15'-10"360 17'-8" 16'-8" 16'-1" 15'-5" 19'-7" 18'-2" 17'-5" 16'-9" 17'-4" 16'-4" 15'-8" 15'-1" 19'-0" 17'-8" 17'-0" 16'-4"560 19'-3" 17'-10" 17'-2" 16'-5" 21'-4" 19'-10" 18'-10" 17'-10" 18'-10" 17'-6" 16'-10" 16'-2" 20'-11" 19'-4" 18'-5" 17'-6"
117⁄8"
110 18'-8" 17'-6" 16'-10" 16'-2" 20'-8" 19'-3" 18'-5" 16'-11"(1) 18'-0" 16'-11" 16'-4" 15'-8" 19'-11" 18'-6" 17'-8" 16'-11" (1)
210 19'-3" 17'-11" 17'-3" 16'-7" 21'-4" 19'-10" 19'-0" 18'-0" 18'-8" 17'-5" 16'-9" 16'-1" 20'-7" 19'-1" 18'-3" 17'-5"230 19'-7" 18'-3" 17'-6" 16'-9" 21'-9" 20'-3" 19'-4" 18'-4" 19'-0" 17'-8" 17'-0" 16'-4" 21'-0" 19'-6" 18'-7" 17'-8"360 20'-4" 18'-11" 18'-0" 17'-3" 22'-7" 21'-0" 20'-0" 18'-11" 19'-9" 18'-4" 17'-7" 16'-10" 21'-11" 20'-3" 19'-4" 18'-4"560 22'-3" 20'-7" 19'-7" 18'-7" 24'-8" 22'-10" 21'-9" 20'-7" 21'-9" 20'-1" 19'-2" 18'-1" 24'-1" 22'-3" 21'-2" 20'-1"
14"
110 20'-9" 19'-4" 18'-6" 17'-7"(1) 23'-0" 21'-5" 20'-6" 18'-5"(1) 20'-0" 18'-7" 17'-9" 17'-0"(1) 22'-1" 20'-6" 19'-7" 18'-5" (1)
210 21'-5" 19'-11" 19'-0" 18'-0" 23'-8" 22'-1" 21'-1" 20'-0" (1) 20'-8" 19'-2" 18'-3" 17'-6" 22'-10" 21'-3" 20'-3" 19'-2" (1)
230 21'-10" 20'-3" 19'-4" 18'-4" 24'-2" 22'-6" 21'-6" 20'-4" 21'-1" 19'-7" 18'-8" 17'-9" 23'-4" 21'-8" 20'-8" 19'-7"360 22'-7" 21'-0" 20'-0" 18'-11" 25'-1" 23'-3" 22'-3" 21'-1" 22'-0" 20'-4" 19'-4" 18'-4" 24'-4" 22'-6" 21'-5" 20'-4"560 24'-9" 22'-11" 21'-9" 20'-7" 27'-5" 25'-5" 24'-2" 22'-10" 24'-2" 22'-4" 21'-3" 20'-1" 26'-9" 24'-9" 23'-6" 22'-3"
16"
210 23'-4" 21'-8" 20'-9" 19'-8"(1) 25'-10" 24'-1" 23'-0" 21'-5" (1) 22'-6" 20'-10" 19'-11" 18'-10"(1) 24'-11" 23'-1" 22'-0" 20'-10" (1)
230 23'-9" 22'-1" 21'-1" 20'-0" 26'-3" 24'-6" 23'-4" 22'-2" (1) 23'-0" 21'-3" 20'-3" 19'-3" 25'-5" 23'-7" 22'-5" 21'-3" (1)
360 24'-7" 22'-10" 21'-9" 20'-8" 27'-3" 25'-4" 24'-2" 22'-11" (1) 23'-11" 22'-1" 21'-1" 19'-11" 26'-5" 24'-6" 23'-4" 22'-1" (1)
560 26'-11" 24'-11" 23'-9" 22'-5" 29'-10" 27'-8" 26'-4" 24'-11" 26'-4" 24'-3" 23'-1" 21'-9" 29'-2" 26'-11" 25'-7" 24'-2"40 PSF Live Load / 30 PSF Dead Load
9½"
110 16'-6" 15'-7" 14'-6" 12'-5" 17'-11" 15'-10" 14'-6" 12'-5" 16'-1" 15'-2" 14'-6" 12'-5" 17'-5" 15'-10" 14'-6" 12'-5"210 16'-11" 16'-0" 15'-5" 13'-9" 18'-6" 17'-4" 15'-10" 13'-9" 16'-6" 15'-7" 15'-0" 13'-9" 17'-10" 16'-10" 15'-10" 13-9"230 17'-2" 16'-3" 15'-8" 14'-11" 18'-10" 17'-7" 16'-9" 14'-11" 16'-9" 15'-10" 15'-3" 14'-7" 18'-3" 17'-2" 16'-6" 14'-11"360 17'-8" 16'-8" 16'-1" 15'-5" 19'-7" 18'-2" 17'-5" 15'-10" 17'-4" 16'-4" 15'-8" 15'-1" 19'-0" 17'-8" 17'-0" 15'-10"560 19'-3" 17'-10" 17'-2" 16'-5" 21'-4" 19'-10" 18'-10" 17'-10" 18'-10" 17'-6" 16'-10" 16'-2" 20'-11" 19'-4" 18'-5" 17'-6"
117⁄8"
110 18'-8" 17'-6" 16'-3"(1) 14'-6"(1) 20'-7" 17'-10" 16'-3"(1) 14'-6"(1) 18'-0" 16'-11" 16'-3"(1) 14'-6"(1) 19'-11" 17'-10" 16'-3"(1) 14'-6"(1)
210 19'-3" 17'-11" 17'-3"(1) 15'-10"(1) 21'-4" 19'-7" 17'-10"(1) 15'-10"(1) 18'-8" 17'-5" 16'-9" 15'-10"(1) 20'-7" 19'-1" 17'-10" (1) 15'-10"(1)
230 19'-7" 18'-3" 17'-6" 16'-9"(1) 21'-9" 20'-3" 18'-10" 16'-10"(1) 19'-0" 17'-8" 17'-0" 16'-4"(1) 21'-0" 19'-6" 18'-7" 16'-10" (1)
360 20'-4" 18'-11" 18'-0" 17'-3"(1) 22'-7" 21'-0" 20'-0"(1) 17'-11"(1) 19'-9" 18'-4" 17'-7" 16'-10"(1) 21'-11" 20'-3" 19'-4" 17'-11" (1)
560 22'-3" 20'-7" 19'-7" 18'-7" 24'-8" 22'-10" 21'-9" 20'-7" (1) 21'-9" 20'-1" 19'-2" 18'-1" 24'-1" 22'-3" 21'-2" 20'-1" (1)
14"
110 20'-9" 19'-4"(1) 17'-9"(1) 14'-6"(1) 22'-5" 19'-5"(1) 17'-9"(1) 14'-6"(1) 20'-0" 18'-7" 17'-9"(1) 14'-6"(1) 22'-1" 19'-5"(1) 17'-9"(1) 14'-6"(1)
210 21'-5" 19'-11" 19'-0"(1) 15'-10"(1) 23'-8" 21'-4"(1) 19'-5"(1) 15'-10"(1) 20'-8" 19'-2" 18'-3"(1) 15'-10"(1) 22'-10" 21'-3" (1) 19'-5"(1) 15'-10"(1)
230 21'-10" 20'-3" 19'-4"(1) 17'-0"(1) 24'-2" 22'-5" 20'-6"(1) 17'-7"(1) 21'-1" 19'-7" 18'-8" 17'-0"(1) 23'-4" 21'-8" 20'-6" (1) 17'-7"(1)
360 22'-7" 21'-0" 20'-0"(1) 17'-4"(1) 25'-1" 23'-3" 22'-3" (1) 17'-11"(1) 22'-0" 20'-4" 19'-4" 17'-4"(1) 24'-4" 22'-6" 21'-5" (1) 17'-11"(1)
560 24'-9" 22'-11" 21'-9" 20'-4"(1) 27'-5" 25'-5" 24'-2" (1) 22'-1"(1) 24'-2" 22'-4" 21'-3" 20'-1"(1) 26'-9" 24'-9" 23'-6" 22'-1" (1)
16"
210 23'-4" 21'-8"(1) 19'-11"(1) 15'-10"(1) 25'-10" 22'-10"(1) 19'-11"(1) 15'-10"(1) 22'-6" 20'-10"(1) 19'-11"(1) 15'-10"(1) 24'-11" 22'-10" (1) 19'-11"(1) 15'-10"(1)
230 23'-9" 22'-1" 21'-1"(1) 17'-0"(1) 26'-3" 24'-0" (1) 21'-11"(1) 17'-7"(1) 23'-0" 21'-3" 20'-3"(1) 17'-0"(1) 25'-5" 23'-7" (1) 21'-11" (1) 17'-7"(1)
360 24'-7" 22'-10" 21'-9"(1) 17'-4"(1) 27'-3" 25'-4" (1) 22'-5"(1) 17'-11"(1) 23'-11" 22'-1" 21'-1"(1) 17'-4"(1) 26'-5" 24'-6" (1) 22'-5" (1) 17'-11"(1)
560 26'-11" 24'-11" 23'-9" 20'-4"(1) 29'-10" 27'-8" 26'-4" (1) 22'-1"(1) 26'-4" 24'-3" 23'-1" 20'-4"(1) 29'-2" 26'-11" 25'-7" (1) 22'-1"(1)
¾" OSB Subfloor (Glue-nailed)—Vibration-Controlled, Standard Term
(1) Web stiffeners are required at intermediate supports of continuous-span joists when the intermediate bearing length is less than 5¼" and the span on either side of the intermediate bearing is greater than the following spans:
40 PSF Live Load / 10 PSF Dead Load 40 PSF Live Load / 30 PSF Dead LoadTJI® 12" o.c. 16" o.c. 19.2" o.c. 24" o.c. 12" o.c. 16" o.c. 19.2" o.c. 24" o.c.110
Not Required16'-9"
Not Required
18'-8" 15'-6" 12'-5"210 18'-6" 20'-8" 17'-3" 13'-9"230 20'-10" 23'-3" 19'-4" 15'-5"360 21'-3" 23'-9" 19'-9" 15'-10"560 Not Required Not Required 24'-2" 19'-3"
■ Bold italic spans indicate floors that would meet National Building Code of Canada (NBCC) vibration criteria but would be considered by 35% of the population to have marginal or unacceptable performance.
General Notes■ Tables are based on: – Clear distance between supports. – Minimum bearing length of 1¾" end (no web stiffeners) and 3½" intermediate. – Limit States Design per CSA O86. – Uniform loads. – Single layer of appropriate span-rated OSB. – NBCC vibration criteria as ratified by Canadian Construction Materials Centre
(CCMC).
■ Long term deflection under dead load, which includes the effect of creep, has not been considered.
■ For continuous spans, ratio of short span to long span should be 0.4 or greater to prevent uplift.
■ Spans generated from Weyerhaeuser software may exceed the spans shown in these tables because software reflects actual design conditions.
■ For multi-family applications and other loading conditions not shown, refer to Weyerhaeuser software.
9Trus Joist® TJI Joist® Specifier's Guide (W. Canada) TJ-4500 | November 2018
These Conditions Are NOT Permitted:
DO NOT bevel cut joist beyond inside face of wall.
DO NOT use sawn lumber for rim board or blocking as it may shrink after installation. Use only engineered lumber
DO NOT install hanger overhanging face of plate or beam. Flush bearing plate with inside face of wall or beam.
FLOOR SPAN TABLES
See pages 7 and 8 for General Notes and information on how to use these tables
To more accurately predict floor performance, use our TJ-Pro™ Ratings
Depth TJI®
Directly Applied Ceiling No Directly Applied CeilingSimple or Continuous Span Continuous Span Only Simple or Continuous Span Continuous Span Only
12" o.c. 16" o.c. 19.2" o.c. 24" o.c. 12" o.c. 16" o.c. 19.2" o.c. 24" o.c. 12" o.c. 16" o.c. 19.2" o.c. 24" o.c. 12" o.c. 16" o.c. 19.2" o.c. 24" o.c.40 PSF Live Load / 10 PSF Dead Load
9½"
110 17'-3'' 15'-10'' 14'-10'' 13'-8'' 18'-11'' 17'-5'' 16'-4'' 15'-0'' 16'-9'' 15'-10'' 14'-10'' 13'-8'' 18'-3'' 17'-2'' 16'-4'' 15'-0''210 17'-8'' 16'-8'' 15'-8'' 14'-5'' 19'-6'' 18'-2'' 17'-3'' 15'-11'' 17'-3'' 16'-3'' 15'-8'' 14'-5'' 18'-10'' 17'-7'' 17'-0'' 15'-11''230 17'-11'' 16'-11'' 16'-2'' 14'-11'' 19'-10'' 18'-6'' 17'-9'' 16'-5'' 17'-6'' 16'-7'' 15'-11'' 14'-11'' 19'-3'' 17'-11'' 17'-3'' 16'-5''360 18'-7'' 17'-5'' 16'-9'' 15'-11'' 20'-7'' 19'-2'' 18'-3'' 17'-5'' 18'-2'' 17'-1'' 16'-5'' 15'-8'' 20'-1'' 18'-7'' 17'-9'' 17'-0''560 20'-4'' 18'-10'' 17'-11'' 17'-1'' 22'-6'' 20'-11'' 19'-11'' 18'-9'' 19'-11'' 18'-5'' 17'-7'' 16'-10'' 22'-0'' 20'-5'' 19'-5'' 18'-4''
117⁄8"
110 19'-8" 18'-4" 17'-7" 16'-4" 21'-10" 20'-4" 18'-11" 16'-11"(1) 19'-0" 17'-9" 17'-1" 16'-4" 21'-0" 19'-6" 18'-7" 16'-11"(1)
210 20'-4" 18'-11" 18'-1" 17'-3" 22'-6" 21'-0" 20'-0" 18'-6" 19'-8" 18'-3" 17'-6" 16'-9" 21'-9" 20'-2" 19'-3" 18'-2"230 20'-8" 19'-3" 18'-4" 17'-6" 22'-11" 21'-4" 20'-4" 19'-3" 20'-1" 18'-8" 17'-9" 17'-0" 22'-2" 20'-7" 19'-8" 18'-6"360 21'-5" 19'-11" 19'-0" 17'-11" 23'-9" 22'-1" 21'-1" 19'-11" 20'-11" 19'-4" 18'-5" 17'-6" 23'-1" 21'-5" 20'-5" 19'-3"560 23'-5" 21'-9" 20'-8" 19'-6" 25'-11" 24'-1" 22'-11" 21'-7" 22'-11" 21'-3" 20'-2" 19'-0" 25'-5" 23'-6" 22'-4" 21'-1"
14"
110 21'-11" 20'-5" 19'-6" 18'-5"(1) 24'-3" 22'-7" 20'-7" 18'-5"(1) 21'-1" 19'-7" 18'-8" 17'-8"(1) 23'-4" 21'-8" 20'-7" 18'-5"(1)
210 22'-7" 21'-0" 20'-1" 18'-11"(1) 25'-0" 23'-4" 22'-3" 20'-2"(1) 21'-10" 20'-3" 19'-4" 18'-3" 24'-1" 22'-5" 21'-4" 20'-2"(1)
230 23'-0" 21'-5" 20'-5" 19'-3" 25'-5" 23'-9" 22'-8" 21'-3"(1) 22'-3" 20'-8" 19'-8" 18'-7" 24'-7" 22'-10" 21'-9" 20'-7"360 23'-10" 22'-2" 21'-1" 19'-11" 26'-4" 24'-7" 23'-5" 22'-1"(1) 23'-2" 21'-6" 20'-5" 19'-3" 25'-7" 23'-9" 22'-7" 21'-4"(1)
560 26'-0" 24'-2" 22'-11" 21'-7" 28'-9" 26'-9" 25'-6" 24'-0" 25'-6" 23'-7" 22'-5" 21'-1" 28'-2" 26'-1" 24'-10" 23'-4"
16"
210 24'-7" 22'-11" 21'-10" 20'-8"(1) 27'-2" 25'-4" 24'-2"(1) 21'-5"(1) 23'-9" 22'-1" 21'-0" 19'-10"(1) 26'-3" 24'-5" 23'-3"(1) 21'-5"(1)
230 25'-0" 23'-4" 22'-3" 21'-0"(1) 27'-8" 25'-10" 24'-8" 22'-9"(1) 24'-3" 22'-6" 21'-5" 20'-2" 26'-9" 24'-10" 23'-8" 22'-4"(1)
360 25'-11" 24'-1" 23'-0" 21'-8"(1) 28'-8" 26'-9" 25'-6" 24'-1"(1) 25'-2" 23'-4" 22'-3" 20'-11" 27'-10" 25'-10" 24'-7" 23'-2"(1)
560 28'-3" 26'-3" 25'-0" 23'-6" 31'-4" 29'-1" 27'-8" 26'-1"(1) 27'-8" 25'-7" 24'-4" 22'-11" 30'-8" 28'-4" 27'-0" 25'-4"40 PSF Live Load / 30 PSF Dead Load
9½"
110 17'-3" 15'-10" 14'-6" 12'-5" 18'-4" 15'-10" 14'-6" 12'-5" 16'-9" 15'-10" 14'-6" 12'-5" 18'-3" 15'-10" 14'-6" 12'-5"210 17'-8" 16'-8" 15'-8" 13'-9" 19'-6" 17'-5" 15'-10" 13'-9" 17'-3" 16'-3" 15'-8" 13'-9" 18'-10" 17'-5" 15'-10" 13'-9"230 17'-11" 16'-11" 16'-2" 14'-11" 19'-10" 18'-4" 16'-9" 14'-11" 17'-6" 16'-7" 15'-11" 14'-11" 19'-3" 17'-11" 16'-9" 14'-11"360 18'-7" 17'-5" 16'-9" 15'-10" 20'-7" 19'-2" 18'-3" 15'-10" 18'-2" 17'-1" 16'-5" 15'-8" 20'-1" 18'-7" 17'-9" 15'-10"560 20'-4" 18'-10" 17'-11" 17'-1" 22'-6" 20'-11" 19'-11" 18'-9" 19'-11" 18'-5" 17'-7" 16'-10" 22'-0" 20'-5" 19'-5" 18'-4"
117⁄8"
110 19'-8" 17'-10" 16'-3"(1) 14'-6"(1) 20'-7" 17'-10" 16'-3"(1) 14'-6"(1) 19'-0" 17'-9" 16'-3"(1) 14'-6"(1) 20'-7" 17'-10" 16'-3"(1) 14'-6"(1)
210 20'-4" 18'-11" 17'-10"(1) 15'-10"(1) 22'-6" 19'-7" 17'-10"(1) 15'-10"(1) 19'-8" 18'-3" 17'-6"(1) 15'-10"(1) 21'-9" 19'-7" 17'-10"(1) 15'-10"(1)
230 20'-8" 19'-3" 18'-4" 16'-10"(1) 22'-11" 20'-7" 18'-10" 16'-10"(1) 20'-1" 18'-8" 17'-9" 16'-10"(1) 22'-2" 20'-7" 18'-10" 16'-10"(1)
360 21'-5" 19'-11" 19'-0" 17'-4"(1) 23'-9" 22'-1" 21'-1"(1) 17'-11"(1) 20'-11" 19'-4" 18'-5" 17'-4"(1) 23'-1" 21'-5" 20'-5"(1) 17'-11"(1)
560 23'-5" 21'-9" 20'-8" 19'-6"(1) 25'-11" 24'-1" 22'-11" 21'-7"(1) 22'-11" 21'-3" 20'-2" 19'-0" 25'-5" 23'-6" 22'-4" 21'-1"(1)
14"
110 21'-11" 19'-5"(1) 17'-9"(1) 14'-6"(1) 22'-5" 19'-5"(1) 17'-9"(1) 14'-6"(1) 21'-1" 19'-5"(1) 17'-9"(1) 14'-6"(1) 22'-5" 19'-5"(1) 17'-9"(1) 14'-6"(1)
210 22'-7" 21'-0"(1) 19'-5"(1) 15'-10"(1) 24'-7" 21'-4"(1) 19'-5"(1) 15'-10"(1) 21'-10" 20'-3" 19'-4"(1) 15'-10"(1) 24'-1" 21'-4"(1) 19'-5"(1) 15'-10"(1)
230 23'-0" 21'-5" 20'-5"(1) 17'-0"(1) 25'-5" 22'-5" 20'-6"(1) 17'-7"(1) 22'-3" 20'-8" 19'-8"(1) 17'-0"(1) 24'-7" 22'-5" 20'-6"(1) 17'-7"(1)
360 23'-10" 22'-2" 21'-1"(1) 17'-4"(1) 26'-4" 24'-7"(1) 22'-5"(1) 17'-11"(1) 23'-2" 21'-6" 20'-5"(1) 17'-4"(1) 25'-7" 23'-9"(1) 22'-5"(1) 17'-11"(1)
560 26'-0" 24'-2" 22'-11" 20'-4"(1) 28'-9" 26'-9" 25'-6"(1) 22'-1"(1) 25'-6" 23'-7" 22'-5" 20'-4"(1) 28'-2" 26'-1" 24'-10"(1) 22'-1"(1)
16"
210 24'-7" 22'-10"(1) 19'-11"(1) 15'-10"(1) 26'-4" 22'-10"(1) 19'-11"(1) 15'-10"(1) 23'-9" 22'-1"(1) 19'-11"(1) 15'-10"(1) 26'-3" 22'-10"(1) 19'-11"(1) 15'-10"(1)
230 25'-0" 23'-4"(1) 21'-4"(1) 17'-0"(1) 27'-8" 24'-0"(1) 21'-11"(1) 17'-7"(1) 24'-3" 22'-6" 21'-4"(1) 17'-0"(1) 26'-9" 24'-0"(1) 21'-11"(1) 17'-7"(1)
360 25'-11" 24'-1"(1) 21'-9"(1) 17'-4"(1) 28'-8" 26'-9"(1) 22'-5"(1) 17'-11"(1) 25'-2" 23'-4" 21'-9"(1) 17'-4"(1) 27'-10" 25'-10"(1) 22'-5"(1) 17'-11"(1)
560 28'-3" 26'-3" 25'-0"(1) 20'-4"(1) 31'-4" 29'-1"(1) 27'-8"(1) 22'-1"(1) 27'-8" 25'-7" 24'-4"(1) 20'-4"(1) 30'-8" 28'-4" 27'-0"(1) 22'-1"(1)
7⁄8" OSB Subfloor (Glue-nailed)—Vibration-Controlled, Standard Term
(1) Web stiffeners are required at intermediate supports of continuous-span joists when the intermediate bearing length is less than 5¼" and the span on either side of the intermediate bearing is greater than the following spans:
40 PSF Live Load / 10 PSF Dead Load 40 PSF Live Load / 30 PSF Dead LoadTJI® 12" o.c. 16" o.c. 19.2" o.c. 24" o.c. 12" o.c. 16" o.c. 19.2" o.c. 24" o.c.110
Not Required
Not Required 16'-9"
Not Required
18'-8" 15'-6" 12'-5"210 23'-2" 18'-6" 20'-8" 17'-3" 13'-9"230
Not Required20'-10" 23'-3" 19'-4" 15'-5"
360 21'-3" 23'-9" 19'-9" 15'-10"560 26'-0" 29'-0" 24'-2" 19'-3"
■ Bold italic spans indicate floors that would meet National Building Code of Canada (NBCC) vibration criteria but would be considered by 35% of the population to have marginal or unacceptable performance.
10Trus Joist® TJI Joist® Specifier's Guide (W. Canada) TJ-4500 | November 2018
CANTILEVERS
Cantilevers 5" to 24"See Section B of cantilever table on page 11
Cantilevers Less than 5" (Brick Ledge)See Section A of cantilever table on page 11
TJI® joists may be cantilevered 5" to 24" when supporting roof load, assuming: ■ simple or continuous span ■ L1 ≤ L2 ■ minimum backspan = 2x cantilever length
2'-0"
5" to 24"
Roof truss span40 psf live load
L2 L1
2'-0"
Less than 5"
Roof truss span
40 psf live load
TJI® joists may be cantilevered up to 5" when supporting roof load, assuming: ■ simple or continuous span ■ L1 ≤ L2 ■ minimum backspan = 2x cantilever length
L2 L1
TJI® joists are intended for dry-use applications
Details E2 – E9 are not for use with joist depths > 16". See pages 20 – 21 for cantilevers using deeper joists.
For more information on details E1 – E9, refer to our cover sheets and AutoCAD details online at weyerhaeuser.com/woodproducts/software-learning.
PB1
E1
E1W
E2 E3
E5
E6E8 E7
F1
E4
E9
1 ⁄3
1 ⁄3
1 ⁄3
E1, E1WWeb stiffeners required both sides at E1W
ONLY
Wood backer at F1
5" to 24"
1½ times
cantilever length
Cantilever length
4'-0" maxim
um
(uniform loads only)
Less than 5"
F1Nail through 2x_ cantilever, wood backer, and TJI® joist web with two rows 10d (0.148" x 3") nails at 6" on-centre, clinched. Use 16d (0.135" x 3½") nails with TJI® 560 joists. F1 applies to uniformly loaded joists only.
11⁄8" TJ® Rim Board or 1¼" TimberStrand® LSL, typical. Nail with 10d (0.131" x 3")nails, one each at top and bottom flange.
8" diameter maximum hole for 117⁄8"–16" deep blocking panels; 6" diameter maximum for blocking panels 9½" deep or shorter than 12" long. Do not cut flanges.
E7, E8, E9Horizontal blocking panel between each joist. 12" length of ¾" reinforcement on one side with E7, both sides with E8. Attach to joist with one 8d (0.131" x 2½") nail at each corner. No reinforcement at E9. Nail rim to blocking panel and blocking panel to plate with connections equivalent to floor panel schedule.
E46'-0" length of TJI® joist reinforcement and filler block at E4. Attach to joist web with three rows 10d (0.148" x 3") nails at 6" on-centre, clinched. Use 4'-0" length with 9½" and 117⁄8" TJI® joists, and attach to joist web with two rows 10d (0.148" x 3") nails at 6" on-centre, clinched. Not for use with TJI® 560 joists.
E2, E34'-0" length of 3⁄4" reinforcement on one side at E2, both sides at E3. Attach to joist flange with 8d (0.131" x 2½") nails at 6" on-centre. When reinforcing both sides, stagger nails.
11⁄8" TJ® Rim Board or 1¼" TimberStrand® LSL, typical. Attach to joist with one 10d (0.131" x 3") nail at top and bottom flanges.
E5, E6Full depth vertical blocking panel between each joist. Use 12" length of ¾" reinforcement on one side at E5, both sides at E6. Attach to joist with one 8d (0.131" x 2½") nail at each corner.
PB1 Cantilever back span must be permanently braced with either direct- applied ceiling along entire length or permanent bracing at 1⁄3 points. See detail PB1 below for connections.
Two 2½" screws for 2x_ strapping connections
Two 8d (0.113" x 2½") nails or 2½" screws, typical
Apply subfloor adhesive to all contact surfaces
When specified on the layout, one of the above bracing options is required
PB1
Directly applied ceiling
11Trus Joist® TJI Joist® Specifier's Guide (W. Canada) TJ-4500 | November 2018
CANTILEVERS
How to Use This Table1. Identify TJI® joist and depth.
2. Locate the Roof Truss Span (horizontal) that meets or exceeds your condition.
3. Identify the cantilever condition (less than 5" or 5" to 24") and locate the Unfactored Roof Total Load and On-Centre Joist Spacing for your application.
4. Scan down to find the appropriate cantilever detail and refer to drawing on page 10: – Blank cells indicate no reinforcement is required. – E4 may be used in place of E2 or E3 except when using TJI® 560 joists. – X indicates cantilever will not work. Use Forte® or Javelin® software,
or reduce spacing of joists and recheck table.
General Notes■ Table is based on:
– 15 psf unfactored roof dead load on a horizontal projection. – 80 plf unfactored exterior wall load with 3'-0" maximum width window or door
openings. For larger openings, or multiple 3'-0" width openings spaced less than 6'-0" on-centre, additional joists beneath the opening's trimmers may be required.
– 40/10 psf floor load. – More restrictive of simple or continuous span. – Roof truss with 24" soffits.
■ ¾" reinforcement refers to ¾" standard sheathing grade of Douglas fir or Canadian softwood plywood or other ¾" exterior grade 48/24-rated sheathing that is cut to match the full depth of the TJI® joist. Install with face grain horizontal. Reinforcing member must bear fully on the wall plate.
■ Designed for 2x4 and 2x6 plate widths.
■ For conditions beyond the scope of this table, including cantilevers longer than 24", use our Forte® or Javelin® software.
Cantilever Reinforcement
Depth TJI®Roof Truss Span
Section A: Cantilevers less than 5" (Brick Ledge) Section B: Cantilevers 5" to 24"Unfactored Roof Total Load Unfactored Roof Total Load
35 PSF 45 PSF 55 PSF 35 PSF 45 PSF 55 PSFOn-Centre Joist Spacing On-Centre Joist Spacing
16" 19.2" 24" 16" 19.2" 24" 16" 19.2" 24" 16" 19.2" 24" 16" 19.2" 24" 16" 19.2" 24"
9½"117⁄8"14"
110
18' E5 E5 X20' E5 E5 E5 E2 E2 X22' E5 E5 E5 E3 E3 X24' E5 E5 E5 E5 E5 E5 E2 E2 X E2 X X26' E5 E5 E5 E5 E5 E6 E3 E2 E3 X E3 X X28' X E5 X E5 E5 X E2 X E2 X X X X X30' E5 X E5 E5 X E5 E5 X E2 E3 X E3 X X X X X
9½"117⁄8"14"16"
210
18' E520' E5 E5 E222' E5 E5 E5 E2 E2 E324' E5 E5 E5 E3 E3 X26' E5 E5 E5 E5 E5 E2 E2 X E2 X X28' E5 E5 E5 E5 E5 E6 E3 E2 E3 X E3 X X30' X E5 X E5 E5 X E2 X E2 X X X X X32' X X X X E5 X X E3 X E3 X X X X X
9½"117⁄8"14"16"
230
20' E5 E5 E222' E5 E5 E5 E2 E324' E5 E5 E5 E2 E2 X26' E5 E5 E5 E5 E5 E2 E3 E2 E3 X28' E5 E5 E5 E5 E5 E5 E2 E2 X E3 X X30' E5 E5 E5 E5 E5 E6 E3 E2 E3 X E3 X X32' X E5 X E5 E5 X E2 X E3 X X X X X
9½"117⁄8"14"16"
360
22' E5 E5 E224' E5 E5 E5 E326' E5 E5 E5 E2 E2 X28' E5 E5 E5 E5 E3 E2 E3 X30' E5 E5 E5 E5 E5 E5 E2 E2 X E2 X X32' E5 E5 E5 E5 E5 E6 E3 E2 E3 X E3 X X34' X E5 X E5 E5 X E2 X E2 X X X X X36' X X E5 X X E5 X X E2 X E3 X X X X X
9½"117⁄8"14"16"
560
26' E5 E228' E5 E5 E230' E5 E5 E5 E332' E5 E5 E6 E2 E2 X34' E5 E5 E5 E6 E3 E3 X36' E5 E5 E5 E5 E5 E6 E2 E2 E3 E2 E3 X38' X E5 X E5 E5 X E2 E2 X E2 X X40' X E5 X E5 E5 X X E2 E3 X E3 X X
12Trus Joist® TJI Joist® Specifier's Guide (W. Canada) TJ-4500 | November 2018
ROOF SPAN TABLE
O.C. Spacing Depth TJI®
Unfactored Snow Load (LL) and Dead Load (DL) in PSF25LL + 15DL 30LL + 15DL 40LL + 15DL 50LL + 15DL
Low High Low High Low High Low High
16"
9½"
110 18'-0" 16'-8" 16'-11" 15'-8" 15'-3" 14'-2" 14'-1" 13'-1"210 19'-0" 17'-8" 17'-10" 16'-7" 16'-2" 15'-0" 14'-11" 13'-11"230 19'-8" 18'-3" 18'-6" 17'-2" 16'-8" 15'-6" 15'-5" 14'-4"360 20'-11" 19'-5" 19'-8" 18'-3" 17'-9" 16'-6" 16'-5" 15'-3"560 24'-1" 22'-5" 22'-7" 21'-0" 20'-5" 19'-0" 18'-11" 17'-7"
117⁄8"
110 21'-6" 19'-11" 20'-2" 18'-9" 18'-3" 17'-0" 16'-11" 15'-8"210 22'-9" 21'-1" 21'-4" 19'-10" 19'-3" 17'-11" 17'-10" 16'-7"230 23'-5" 21'-9" 22'-0" 20'-5" 19'-11" 18'-6" 18'-5" 17'-2"360 24'-11" 23'-2" 23'-5" 21'-9" 21'-2" 19'-8" 19'-7" 18'-3"560 28'-9" 26'-8" 26'-11" 25'-0" 24'-4" 22'-8" 22'-6" 21'-0"
14"
110 24'-6" 22'-9" 23'-0" 21'-4" 20'-10" 19'-4" 19'-3" 17'-11"210 25'-10" 24'-0" 24'-3" 22'-6" 21'-11" 20'-5" 20'-4" 18'-11"230 26'-8" 24'-9" 25'-1" 23'-3" 22'-8" 21'-1" 20'-11" 19'-6"360 28'-4" 26'-4" 26'-7" 24'-9" 24'-1" 22'-5" 22'-3" 20'-9"560 32'-7" 30'-3" 30'-7" 28'-5" 27'-8" 25'-9" 25'-7" 23'-10"
16"
210 28'-8" 26'-7" 26'-11" 25'-0" 24'-4" 22'-8" 21'-6" 20'-11"230 29'-7" 27'-5" 27'-9" 25'-9" 25'-1" 23'-4" 23'-3" 21'-7"360 31'-5" 29'-2" 29'-6" 27'-5" 26'-8" 24'-10" 24'-8" 22'-11"560 36'-1" 33'-6" 33'-10" 31'-5" 30'-8" 28'-6" 28'-4" 26'-4"
19.2"
9½"
110 16'-11" 15'-8" 15'-10" 14'-9" 14'-4" 13'-4" 13'-3" 12'-4"210 17'-10" 16'-7" 16'-9" 15'-7" 15'-2" 14'-1" 14'-0" 13'-0"230 18'-6" 17'-2" 17'-4" 16'-1" 15'-8" 14'-7" 14'-5" 13'-6"360 19'-8" 18'-3" 18'-5" 17'-2" 16'-8" 15'-6" 15'-4" 14'-4"560 22'-7" 21'-0" 21'-3" 19'-9" 19'-2" 17'-10" 17'-8" 16'-6"
117⁄8"
110 20'-2" 18'-9" 18'-11" 17'-7" 17'-2" 15'-11" 15'-10" 14'-9"210 21'-4" 19'-10" 20'-0" 18'-7" 18'-1" 16'-10" 16'-9" 15'-7"230 22'-0" 20'-5" 20'-8" 19'-2" 18'-8" 17'-4" 17'-3" 16'-1"360 23'-5" 21'-9" 22'-0" 20'-5" 19'-10" 18'-6" 18'-4" 17'-1"560 26'-11" 25'-0" 25'-3" 23'-6" 22'-10" 21'-3" 21'-1" 19'-8"
14"
110 22'-11" 21'-4" 21'-7" 20'-0" 19'-3" 18'-2" 16'-2" 16'-9"210 24'-3" 22'-6" 22'-9" 21'-2" 20'-7" 19'-2" 17'-11" 17'-9"230 25'-1" 23'-3" 23'-6" 21'-10" 21'-3" 19'-9" 19'-8" 18'-4"360 26'-7" 24'-9" 25'-0" 23'-3" 22'-7" 21'-0" 20'-7" 19'-5"560 30'-7" 28'-5" 28'-8" 26'-8" 25'-11" 24'-2" 24'-0" 22'-4"
16"
210 26'-11" 25'-0" 25'-3" 23'-6" 21'-4" 21'-3" 17'-11" 19'-4" 230 27'-9" 25'-9" 26'-1" 24'-3" 23'-7" 21'-11" 20'-1" 20'-3"
360 29'-6" 27'-5" 27'-8" 25'-9" 24'-6" 23'-3" 20'-7" 20'-10"560 33'-10" 31'-5" 31'-9" 29'-6" 28'-9" 26'-9" 25'-1" 24'-5"
24"
9½"
110 15'-7" 14'-6" 14'-8" 13'-7" 13'-3" 12'-4" 12'-3" 11'-5"210 16'-6" 15'-4" 15'-6" 14'-5" 14'-0" 13'-0" 12'-11" 12'-0"230 17'-1" 15'-10" 16'-0" 14'-11" 14'-5" 13'-6" 13'-4" 12'-5"360 18'-2" 16'-11" 17'-0" 15'-10" 15'-4" 14'-4" 14'-2" 13'-3"560 20'-11" 19'-5" 19'-7" 18'-3" 17'-8" 16'-6" 16'-4" 15'-3"
117⁄8"
110 18'-8" 17'-4" 17'-6" 16'-4" 15'-4" 14'-9" 12'-11" 13'-8"210 19'-9" 18'-4" 18'-6" 17'-3" 16'-9" 15'-7" 14'-4" 14'-5"230 20'-4" 18'-11" 19'-1" 17'-9" 17'-3" 16'-1" 15'-11" 14'-10"360 21'-8" 20'-2" 20'-4" 18'-11" 18'-4" 17'-1" 16'-5" 15'-10"560 24'-11" 23'-2" 23'-5" 21'-9" 21'-1" 19'-8" 19'-6" 18'-2"
14"
110 20'-6" 19'-7" 19'-0" 18'-6" 15'-4" 16'-5" 12'-11" 14'-0"210 22'-5" 20'-10" 21'-1" 19'-7" 17'-1" 17'-9" 14'-4" 15'-6"230 23'-2" 21'-6" 21'-9" 20'-3" 19'-2" 18'-4" 16'-1" 16'-4"360 24'-7" 22'-11" 23'-1" 21'-6" 19'-7" 19'-5" 16'-5" 16'-8"560 28'-4" 26'-4" 26'-7" 24'-8" 23'-11" 22'-4" 20'-1" 19'-6"
16"
210 23'-11" 23'-0" 21'-1" 21'-9" 17'-1" 18'-2" 14'-4" 15'-6"230 25'-4" 23'-11" 23'-8" 22'-5" 19'-2" 19'-3" 16'-1" 16'-4"360 27'-3" 25'-4" 24'-3" 23'-8" 19'-7" 19'-7" 16'-5" 16'-8"560 31'-4" 29'-1" 29'-5" 27'-4" 23'-11" 22'-11" 20'-1" 19'-6"
Roof—Maximum Horizontal Clear Spans, Standard TermHow to Use This Table1. Determine appropriate unfactored snow
and dead load.
2. If your slope is 6:12 or less, use the Low slope column. If it is between 6:12 and 12:12, use the High column.
3. Scan down the column until you find a span that meets or exceeds the span of your application.
4. Select TJI® joist and on-centre spacing.
General Notes■ Table is based on: – Minimum bearing length of 1¾" end
and 3½" intermediate, without web stiffeners.
– Uniform loads. – More restrictive of simple or
continuous span. – Minimum roof slope of ¼:12.■ Unfactored total load joist deflection
limited to L/180.■ Unfactored live load joist deflection limited
to L/360.
■ For continuous spans, ratio of short span to long span should be 0.4 or greater to prevent uplift.
■ A support beam or wall at the high end is required. Ridge board applications do not provide adequate support.
■ For flat roofs or other loading conditions not shown, refer to Weyerhaeuser software.
13Trus Joist® TJI Joist® Specifier's Guide (W. Canada) TJ-4500 | November 2018
ROOF LOAD TABLE
* Indicates value does not control.
Roof—Factored Resistance, Standard Term (PLF)
How to Use These Tables1. Calculate actual factored total load and unfactored snow and total load on the
joist in pounds per linear foot (plf).
2. Select appropriate Roof Joist Horizontal Clear Span. For slopes greater than 2:12, approximate the increased dead load by multiplying the joist horizontal clear span by the Slope Factor shown on page 31.
3. Scan down the columns to find a TJI® joist that meets or exceeds the actual unfactored snow and total loads, and the factored total load. All three columns must be checked.
General Notes■ Tables are based on: – Minimum bearing length of 1¾" end and 3½" intermediate, without
web stiffeners – Uniform loads. – More restrictive of simple or continuous span. – Minimum roof slope of ¼:12. – No composite action provided by sheathing.
Depth TJI®
Unfactored Deflection Resistance
Factored Strength
Resistance
Unfactored Deflection Resistance
Factored Strength
Resistance
Unfactored Deflection Resistance
Factored Strength
Resistance
Unfactored Deflection Resistance
Factored Strength
Resistance
Unfactored Deflection Resistance
Factored Strength
Resistance
Live Load L/360
Total Load L/180
Total Load
Live Load L/360
Total Load L/180
Total Load
Live Load L/360
Total Load L/180
Total Load
Live Load L/360
Total Load L/180
Total Load
Live Load L/360
Total Load L/180
Total Load
Roof Joist Horizontal Clear Span8' 10' 12' 14' 16'
9½"
110 * * 300 * * 240 114 * 201 74 * 166 51 * 127210 * * 332 * * 266 132 * 222 87 * 191 60 * 153230 * * 373 * * 299 145 * 250 95 * 214 66 * 170360 * * 381 * * 306 170 * 255 112 * 219 78 * 192560 * * 465 * * 373 * * 311 164 * 267 115 * 234
117⁄8"
110 * * 300 * * 240 * * 201 * * 172 85 * 151210 * * 332 * * 266 * * 222 * * 191 98 * 167230 * * 373 * * 299 * * 250 * * 214 107 * 188360 * * 381 * * 306 * * 255 * * 219 127 * 192560 * * 465 * * 373 * * 311 * * 267 * * 234
14"
110 * * 300 * * 240 * * 201 * * 172 * * 151210 * * 332 * * 266 * * 222 * * 191 * * 167230 * * 373 * * 299 * * 250 * * 214 * * 188360 * * 381 * * 306 * * 255 * * 219 * * 192560 * * 465 * * 373 * * 311 * * 267 * * 234
16"
210 * * 332 * * 266 * * 222 * * 191 * * 167230 * * 373 * * 299 * * 250 * * 214 * * 188360 * * 381 * * 306 * * 255 * * 219 * * 192560 * * 465 * * 373 * * 311 * * 267 * * 234
18' 20' 22' 24' 26'
9½"
110 36 * 101 27 54 81210 43 * 121 31 63 98 24 48 81230 47 * 134 35 70 109 26 53 90 20 41 76360 56 112 171 41 83 154 31 63 129 24 49 109 19 39 93560 83 * 208 62 124 188 47 95 171 37 74 156 29 59 143
117⁄8"
110 61 * 127 45 * 103 34 * 85210 71 * 149 52 * 124 40 * 102 31 * 86230 77 * 167 57 * 138 44 * 114 34 * 96 27 54 82360 92 * 171 68 * 154 52 * 140 41 82 128 32 65 118560 135 * 208 101 * 188 78 * 171 61 * 156 48 97 144
14"
110 88 * 134 65 * 121 50 * 101 39 * 85210 102 * 149 76 * 134 58 * 121 45 * 102 36 * 87230 111 * 167 83 * 150 63 * 135 49 * 113 39 * 97360 * * 171 98 * 154 75 * 140 59 * 128 47 * 118560 * * 208 * * 188 111 * 171 87 * 156 69 * 144
16"
210 * * 149 * * 134 78 * 122 61 * 112 48 * 100230 * * 167 * * 150 85 * 137 66 * 125 53 * 111360 * * 171 * * 154 * * 140 79 * 128 63 * 118560 * * 208 * * 188 * * 171 * * 156 92 * 144
14Trus Joist® TJI Joist® Specifier's Guide (W. Canada) TJ-4500 | November 2018
FRAMING CONNECTORS (SIMPSON STRONG-TIE®)
TJI®
Variable Slope Seat Connector(2)
Hanger Fac. Res. (lbs)
NailingHeader Joist
110 VPA25 1,540 10d 10d x 1½"210 VPA2.1 1,690 10d 10d x 1½"230 VPA35 1,770 10d 10d x 1½"360 VPA35 1,805 10d 10d x 1½"560 VPA4 1,855 10d 10d x 1½"
Depth TJI®
Double Joist—Top Mount Double Joist—Face Mount
Hanger Fac. Res. (lbs)
NailingHanger Fac. Res.
(lbs)Nailing
Header Joist Header Joist
9½"
110 MIT49.5 2,420 16d 10d x 1½" MIU3.56/9 3,230 16d 10d x 1½"210 MIT4.28/9.5 2,420 16d 10d x 1½" MIU4.28/9 3,230 16d 10d x 1½"230 MIT359.5-2 2,420 16d 10d x 1½" MIU4.75/9 3,230 16d 10d x 1½"360 MIT359.5-2 2,420 16d 10d x 1½" MIU4.75/9 3,230 16d 10d x 1½"560 B7.12/9.5 3,910 16d 16d HU410-2 4,225 16d 16d
117⁄8"
110 MIT411.88 2,420 16d 10d x 1½" MIU3.56/11 3,230 16d 10d x 1½"210 MIT4.28/11.88 2,420 16d 10d x 1½" MIU4.28/11 3,230 16d 10d x 1½"230 MIT3511.88-2 2,420 16d 10d x 1½" MIU4.75/11 3,230 16d 10d x 1½"360 MIT3511.88-2 2,420 16d 10d x 1½" MIU4.75/11 3,230 16d 10d x 1½"560 B7.12/11.88 3,910 16d 16d HU412-2 4,225 16d 16d
14"
110 MIT414 2,420 16d 10d x 1½" MIU3.56/14 3,485 16d 10d x 1½"210 MIT4.28/14 2,420 16d 10d x 1½" MIU4.28/14 3,485 16d 10d x 1½"230 MIT3514-2 2,420 16d 10d x 1½" MIU4.75/14 3,485 16d 10d x 1½"360 MIT3514-2 2,420 16d 10d x 1½" MIU4.75/14 3,485 16d 10d x 1½"560 B7.12/14 3,910 16d 16d HU414-2 4,615 16d 16d
16"
210 LBV4.28/16 3,125 16d 10d x 1½" MIU4.28/16 3,485 16d 10d x 1½"230 MIT4.75/16 2,420 16d 10d x 1½" MIU4.75/16 3,485 16d 10d x 1½"360 MIT4.75/16 2,420 16d 10d x 1½" MIU4.75/16 3,485 16d 10d x 1½"560 B7.12/16 3,910 16d 16d HU414-2 4,615 16d 16d
TJI®
Variable Slope Seat Joist Hanger(1)
Hanger
Fac. Res. (lbs) Nailing
Sloped Only
Sloped and
SkewedHeader Joist
110 LSSUI25 1,925 1,485 10d 10d x 1½"210 LSSU2.1 2,100 1,485 10d 10d x 1½"230 LSSUI35 2,100 1,485 10d 10d x 1½"360 LSSUI35 2,250 1,485 10d 10d x 1½"560 LSSU410 2,635 1,665 16d 10d x 1½"
General NotesBold italic hangers require web stiffeners.
Factored resistances will vary with different nailing criteria or other support conditions; contact your Weyerhaeuser representative for assistance.■ Hanger factored resistances shown are either joist
bearing or hanger factored resistance—whichever is less. Joist end reaction must be checked to ensure it does not exceed the factored resistance shown in the tables.
■ All factored resistances are for downward loads, standard term.
■ Fill all round, dimple, and positive-angle nail holes.■ Use sloped seat hangers and beveled web
stiffeners when TJI® joist slope exceeds ¼:12.■ Leave 1⁄16" clearance (1⁄8" maximum) between the end
of the supported joist and the header or hanger.■ Nails: 16d = 0.162" x 3½", 10d = 0.148" x 3", and
10d x 11⁄2" = 0.148" x 1½".
Support Requirements■ Support material assumed to be Trus Joist®
engineered lumber or sawn lumber (Douglas fir, southern pine, or spruce-pine-fir species).
■ Minimum support width for single- and double-joist top mount hangers is 3" (1½" for ITS hangers).
■ Minimum support width for face mount hangers with 10d and 16d nails (clinched) is 1½" and 1¾", respectively.
Also see table footnotes on page 15.
Depth TJI®
Single Joist—Top Mount Single Joist—Face Mount Face Mount Skewed 45° Joist Hanger
Hanger Fac. Res. (lbs)
NailingHanger Fac. Res.
(lbs)Nailing
Hanger Fac. Res. (lbs)
NailingHeader Joist Header Joist Header Joist
9½"
110 ITS1.81/9.5 1,540 10d N.A. IUS1.81/9.5 1,540 10d N.A. SUR/L1.81/9 1,925 16d 10d x 1½"210 ITS2.06/9.5 1,690 10d N.A. IUS2.06/9.5 1,690 10d N.A. SUR/L2.1/9 2,100 16d 10d x 1½"230 ITS2.37/9.5 1,690 10d N.A. IUS2.37/9.5 1,690 10d N.A. SUR/L2.37/9 2,100 16d 10d x 1½"360 ITS2.37/9.5 1,690 10d N.A. IUS2.37/9.5 1,690 10d N.A. SUR/L2.37/9 2,250 16d 10d x 1½"560 ITS3.56/9.5 1,690 10d N.A. IUS3.56/9.5 1,685 10d N.A. SUR/L410 2,360 16d 16d
117⁄8"
110 ITS1.81/11.88 1,540 10d N.A. IUS1.81/11.88 1,540 10d N.A. SUR/L1.81/11 1,960 16d 10d x 1½"210 ITS2.06/11.88 1,690 10d N.A. IUS2.06/11.88 1,690 10d N.A. SUR/L2.1/11 2,175 16d 10d x 1½"230 ITS2.37/11.88 1,690 10d N.A. IUS2.37/11.88 1,770 10d N.A. SUR/L2.37/11 2,225 16d 10d x 1½"360 ITS2.37/11.88 1,690 10d N.A. IUS2.37/11.88 1,805 10d N.A. SUR/L2.37/11 2,260 16d 10d x 1½"560 ITS3.56/11.88 1,690 10d N.A. IUS3.56/11.88 1,685 10d N.A. SUR/L410 2,360 16d 16d
14"
110 ITS1.81/14 1,540 10d N.A. IUS1.81/14 1,540 10d N.A. SUR/L1.81/14 1,960 16d 10d x 1½"210 ITS2.06/14 1,690 10d N.A. IUS2.06/14 1,690 10d N.A. SUR/L2.1/14 2,175 16d 10d x 1½"230 ITS2.37/14 1,690 10d N.A. IUS2.37/14 1,770 10d N.A. SUR/L2.37/14 2,225 16d 10d x 1½"360 ITS2.37/14 1,690 10d N.A. IUS2.37/14 1,805 10d N.A. SUR/L2.37/14 2,260 16d 10d x 1½"560 ITS3.56/14 1,690 10d N.A. IUS3.56/14 1,685 10d N.A. SUR/L414 2,360 16d 16d
16"
210 ITS2.06/16 1,690 10d N.A. IUS2.06/16 1,690 10d N.A. SUR/L2.1/14 2,175 16d 10d x 1½"230 ITS2.37/16 1,690 10d N.A. IUS2.37/16 1,770 10d N.A. SUR/L2.37/14 2,225 16d 10d x 1½"360 ITS2.37/16 1,690 10d N.A. IUS2.37/16 1,805 10d N.A. SUR/L2.37/14 2,260 16d 10d x 1½"560 ITS3.56/16 1,690 10d N.A. IUS3.56/16 1,685 10d N.A. SUR/L414 2,360 16d 16d
Single Joist, Top Mount
Variable Slope Seat Connector
Single Joist, Face Mount
Variable Slope Seat Joist Hanger
Double Joist, Top Mount
Double Joist, Face Mount
Face Mount Skewed 45° Joist Hanger
15Trus Joist® TJI Joist® Specifier's Guide (W. Canada) TJ-4500 | November 2018
FRAMING CONNECTORS (USP STRUCTURAL CONNECTORS®)
Depth TJI®
Double Joist—Top Mount Double Joist—Face Mount
Hanger Fac. Res. (lbs)
NailingHanger Fac. Res.
(lbs)Nailing
Header Joist Header Joist
9½"
110 THO35950 2,620 10d 10d x 1½" THF35925 3,500 10d 10d x 1½"210 THO20950-2 3,320 16d 10d THF20925-2 3,790 10d 10d230 THO23950-2 4,200 16d 10d THF23925-2 3,920 10d 10d360 TH023950-2 4,375 16d 10d THF23925-2 3,990 10d 10d560 BPH7195 4,340 16d 10d HD7100 4,180 16d 16d
117⁄8"
110 THO35118 2,620 10d 10d x 1½" THF35112 3,500 10d 10d x 1½"210 THO20118-2 3,355 16d 10d THF20112-2 3,790 10d 10d230 THO23118-2 4,305 16d 10d THF23118-2 3,920 10d 10d360 THO23118-2 4,375 16d 10d THF23118-2 3,990 10d 10d560 BPH71118 4,305 16d 10d HD7120 4,180 16d 16d
14"
110 THO35140 3,385 10d 10d x 1½" THF35140 3,500 10d 10d x 1½"210 THO20140-2 3,355 16d 10d THF20140-2 3,790 10d 10d230 THO23140-2 4,305 16d 10d THF23140-2 3,920 10d 10d360 THO23140-2 4,375 16d 10d THF23140-2 3,990 10d 10d560 BPH7114 4,305 16d 10d HD7140 4,180 16d 16d
16"
210 THO20160-2 3,355 16d 10d THF20140-2 3,790 10d 10d230 THO23160-2 4,305 16d 10d THF23140-2 3,920 10d 10d360 THO23160-2 4,375 16d 10d THF23140-2 3,990 10d 10d560 BPH7116 4,305 16d 10d HD7160 4,615 16d 16d
Depth TJI®
Single Joist—Top Mount Single Joist—Face Mount Face Mount Skewed 45° Joist Hanger
Hanger Fac. Res. (lbs)
NailingHanger Fac. Res.
(lbs)Nailing
Hanger Fac. Res. (lbs)
NailingHeader Joist Header Joist Header Joist
9½"
110 THO17950 1,540 10d 10d x 1½" THF17925 1,540 10d 10d x 1½" SKH1720L/R 1,485 10d 10d x 1½"210 TFL2095 1,690 10d 10d x 1½" THF20925 1,690 10d 10d x 1½" SKH2020L/R 1,640 10d 10d x 1½"230 TFL2395 1,770 10d 10d x 1½" THF23925 1,960 10d 10d x 1½" SKH2320L/R 1,720 10d 10d x 1½"360 TFL2395 1,805 10d 10d x 1½" THF23925 1,995 10d 10d x 1½" SKH2320L/R 1,755 10d 10d x 1½"560 THO35950 2,255 10d 10d x 1½" THF35925 2,305 10d 10d x 1½" SKH410L/R(3) 2,305 16d 16d
117⁄8"
110 THO17118 1,540 10d 10d x 1½" THF17112 1,540 10d 10d x 1½" SKH1720L/R 1,485 10d 10d x 1½"210 TFL20118 1,690 10d 10d x 1½" THF20112 1,690 10d 10d x 1½" SKH2020L/R 1,640 10d 10d x 1½"230 TFL23118 1,770 10d 10d x 1½" THF23118 1,960 10d 10d x 1½" SKH2320L/R 1,720 10d 10d x 1½"360 TFL23118 1,805 10d 10d x 1½" THF23118 1,995 10d 10d x 1½" SKH2320L/R 1,755 10d 10d x 1½"560 THO35118 2,255 10d 10d x 1½" THF35112 2,305 10d 10d x 1½" SKH410L/R(3) 2,305 16d 16d
14"
110 TFL1714 1,540 10d 10d x 1½" THF17140 1,540 10d 10d x 1½" SKH1720L/R 1,485 10d 10d x 1½"210 TFL2014 1,690 10d 10d x 1½" THF20140 1,690 10d 10d x 1½" SKH2020L/R 1,640 10d 10d x 1½"230 TFL2314 1,770 10d 10d x 1½" THF23140 1,960 10d 10d x 1½" SKH2324L/R 1,720 10d 10d x 1½"360 TFL2314 1,805 10d 10d x 1½" THF23140 1,995 10d 10d x 1½" SKH2324L/R 1,755 10d 10d x 1½"560 THO35140 2,255 10d 10d x 1½" THF35140 2,305 10d 10d x 1½" SKH414L/R(3) 2,305 16d 16d
16"
210 TFL2016 1,690 10d 10d x 1½" THF20157 2,250 10d 10d x 1½" SKH2024L/R 1,640 10d 10d x 1½"230 TFL2316 1,770 10d 10d x 1½" THF23160 1,960 10d 10d x 1½" SKH2324L/R 1,720 10d 10d x 1½"360 TFL2316 1,805 10d 10d x 1½" THF23160 1,995 10d 10d x 1½" SKH2324L/R 1,755 10d 10d x 1½"560 THO35160 2,255 10d 10d x 1½" THF35157 2,305 10d 10d x 1½" SKH414L/R(3) 2,305 16d 16d
TJI®
Variable Slope Seat Joist Hanger(1)
Hanger
Fac. Res. (lbs) Nailing
Sloped Only
Sloped and
SkewedHeader Joist
110 LSSH179 1,925 1,925 10d 10d x 1½"210 LSSH20 1,990 1,990 10d 10d x 1½"230 LSSH23 1,990 1,990 10d 10d x 1½"360 LSSH23 1,990 1,990 10d 10d x 1½"560 LSSH35 2,515 2,390 16d 10d x 1½"
Hanger information on pages 14 and 15 was provided by either Simpson Strong-Tie® or USP Structural Connectors®. For additional information, please refer to their literature.
Single Joist, Top Mount
Single Joist, Face Mount
Face Mount Skewed 45° Joist Hanger
Double Joist, Top Mount
Double Joist, Face Mount
Variable Slope Seat Connector
Variable Slope Seat Joist Hanger
Table footnotes for pages 14 and 15: (1) LSSU, LSSUI, and LSSH hangers can be field adjusted for
slopes and skews of up to 45 degrees. Additional lateral restraints are required for 16" deep TJI® joists.
(2) VPA connectors are allowed on slopes of 3:12 through 12:12 only.
(3) Miter cut is required at end of joist.(4) TMP connectors are allowed on slopes of 1:12 through
6:12 only, and TMPH connectors are allowed on slopes of 6:12 through 12:12 only.
Also see General Notes on page 14.
TJI®
Variable Slope Seat Connector(4)
Hanger Fac. Res. (lbs)
NailingHeader Joist
110TMP175 1,270 10d 10d x 1½"
TMPH175 1,925 10d 10d x 1½"
210TMP21 1,425 10d 10d x 1½"
TMPH21 2,100 10d 10d x 1½"
230TMP23 2,100 10d 10d x 1½"
TMPH23 2,100 10d 10d x 1½"
360TMP23 2,175 10d 10d x 1½"
TMPH23 2,250 10d 10d x 1½"
560TMP4 2,175 10d 10d x 1½"
TMPH4 2,635 10d 10d x 1½"
16Trus Joist® TJI Joist® Specifier's Guide (W. Canada) TJ-4500 | November 2018
ALLOWABLE HOLES
OR
Minimum distance from Table A Minimum distance from Table B
Do not cut holes larger than 1½" in cantilever
2 x D1 minimum
(applies to all holes except knockouts)
L1D1 2 x L2
minimumL2 D2
No field cut holes in hatched zones
1½" round holes may be cut anywhere in web outside of hatched zone if they are located 3" away horizontally (edge-to-edge) from a larger hole.
6" 6" 6"
6" 6"
Depth TJI®• Round Hole Size ■ Square or Rectangular Hole Size
2" 3" 4" 5" 6½" 7" 87⁄8"" 11" 13" 2" 3" 4" 5" 6½" 7" 87⁄8" 11" 13"
9½"
110 1'-0" 1'-6" 2'-0" 3'-0" 5'-0" 1'-0" 1'-6" 2'-6" 3'-6" 4'-6"210 1'-0" 1'-6" 2'-6" 3'-0" 5'-6" 1'-0" 2'-0" 2'-6" 4'-0" 5'-0"230 1'-6" 2'-0" 2'-6" 3'-6" 5'-6" 1'-0" 2'-0" 3'-0" 4'-6" 5'-0"360 1'-6" 2'-0" 3'-0" 4'-0" 6'-0" 1'-6" 2'-6" 3'-6" 5'-0" 5'-6"560 1'-6" 2'-6" 3'-6" 5'-0" 7'-0" 2'-0" 3'-0" 4'-0" 5'-6" 6'-0"
117⁄8"
110 1'-0" 1'-0" 1'-6" 2'-0" 2'-6" 3'-0" 5'-6" 1'-0" 1'-6" 2'-0" 2'-6" 4'-6" 5'-0" 6'-0"210 1'-0" 1'-6" 2'-0" 2'-0" 3'-0" 3'-6" 6'-0" 1'-0" 1'-6" 2'-6" 3'-0" 5'-0" 5'-6" 6'-6"230 1'-0" 1'-6" 2'-0" 2'-6" 3'-0" 3'-6" 6'-6" 1'-0" 2'-0" 2'-6" 3'-6" 5'-6" 5'-6" 7'-0"360 1'-6" 2'-0" 3'-0" 3'-6" 4'-6" 5'-0" 7'-0" 1'-6" 2'-6" 3'-6" 4'-6" 6'-6" 6'-6" 7'-6"560 1'-6" 2'-6" 3'-0" 4'-0" 5'-6" 6'-0" 8'-0" 2'-6" 3'-6" 4'-6" 5'-6" 7'-0" 7'-6" 8'-0"
14"
110 1'-0" 1'-0" 1'-0" 1'-0" 1'-6" 2'-0" 3'-0" 5'-6" 1'-0" 1'-0" 1'-6" 2'-0" 3'-6" 4'-0" 6'-0" 8'-0"210 1'-0" 1'-0" 1'-0" 1'-6" 2'-0" 2'-6" 3'-6" 6'-0" 1'-0" 1'-0" 2'-0" 2'-6" 4'-0" 4'-6" 6'-6" 8'-6"230 1'-0" 1'-0" 1'-0" 1'-6" 2'-6" 2'-6" 4'-0" 7'-0" 1'-0" 1'-0" 2'-0" 3'-0" 4'-0" 5'-0" 7'-0" 9'-0"360 1'-0" 1'-0" 1'-6" 2'-6" 3'-6" 4'-0" 5'-6" 8'-0" 1'-0" 1'-6" 2'-6" 4'-0" 6'-0" 6'-6" 8'-0" 9'-6"560 1'-0" 1'-0" 2'-0" 3'-0" 4'-6" 5'-0" 6'-6" 9'-0" 1'-6" 3'-0" 4'-0" 5'-0" 7'-0" 7'-6" 9'-0" 10'-0"
16"
210 1'-0" 1'-0" 1'-0" 1'-0" 1'-0" 1'-6" 2'-6" 3'-6" 6'-0" 1'-0" 1'-0" 1'-0" 2'-0" 3'-0" 3'-6" 6'-6" 8'-0" 11'-0"230 1'-0" 1'-0" 1'-0" 1'-0" 1'-6" 1'-6" 3'-0" 4'-0" 7'-0" 1'-0" 1'-0" 1'-0" 2'-0" 3'-6" 4'-0" 7'-0" 9'-0" 11'-0"360 1'-0" 1'-0" 1'-0" 1'-0" 2'-6" 2'-6" 4'-6" 6'-6" 9'-0" 1'-0" 1'-0" 1'-6" 3'-0" 5'-0" 5'-6" 9'-0" 10'-0" 11'-6"560 1'-0" 1'-0" 1'-0" 1'-0" 2'-6" 3'-0" 5'-0" 7'-6" 10'-0" 1'-0" 2'-0" 3'-0" 4'-6" 6'-6" 7'-0" 10'-0" 11'-0" 12'-0"
Table A—End Support (Minimum distance from edge of hole to inside face of nearest end support)
Depth TJI®• Round Hole Size ■ Square or Rectangular Hole Size
2" 3" 4" 5" 6½" 7" 87⁄8" 11" 13" 2" 3" 4" 5" 6½" 7" 87⁄8" 11" 13"
9½"
110 2'-0" 2'-6" 3'-6" 4'-6" 7'-6" 1'-6" 2'-6" 3'-6" 5'-6" 6'-6"210 2'-0" 2'-6" 3'-6" 5'-0" 8'-0" 2'-0" 3'-0" 4'-0" 6'-6" 7'-6"230 2'-6" 3'-0" 4'-0" 5'-6" 8'-6" 2'-0" 3'-6" 4'-6" 6'-6" 7'-6"360 3'-0" 4'-0" 5'-6" 6'-6" 9'-0" 3'-0" 4'-6" 5'-6" 7'-6" 8'-0"560 3'-6" 5'-0" 6'-0" 7'-6" 10'-0" 4'-0" 5'-6" 6'-6" 8'-0" 9'-0"
117⁄8"
110 1'-0" 1'-0" 1'-6" 2'-6" 4'-0" 4'-6" 8'-6" 1'-0" 1'-6" 2'-6" 4'-0" 7'-0" 7'-0" 9'-6"210 1'-0" 1'-0" 2'-0" 3'-0" 4'-6" 5'-0" 9'-0" 1'-0" 2'-0" 3'-0" 4'-6" 8'-0" 8'-0" 10'-0"230 1'-0" 2'-0" 2'-6" 3'-6" 5'-0" 5'-6" 10'-0" 1'-0" 2'-6" 3'-6" 5'-0" 8'-6" 9'-0" 10'-6"360 2'-0" 3'-0" 4'-0" 5'-6" 7'-0" 7'-6" 11'-0" 2'-0" 3'-6" 5'-0" 7'-0" 9'-6" 9'-6" 11'-0"560 1'-6" 3'-0" 4'-6" 5'-6" 8'-0" 8'-6" 12'-0" 3'-0" 4'-6" 6'-0" 8'-0" 10'-6" 11'-0" 12'-0"
14"
110 1'-0" 1'-0" 1'-0" 1'-0" 2'-0" 2'-6" 4'-6" 8'-6" 1'-0" 1'-0" 1'-0" 2'-6" 5'-0" 6'-0" 9'-0" 12'-0"210 1'-0" 1'-0" 1'-0" 1'-0" 2'-6" 3'-0" 5'-6" 9'-6" 1'-0" 1'-0" 2'-0" 3'-6" 6'-0" 7'-0" 10'-0" 13'-0"230 1'-0" 1'-0" 1'-0" 2'-0" 3'-6" 4'-0" 6'-0" 10'-6" 1'-0" 1'-0" 2'-6" 4'-0" 6'-6" 7'-6" 11'-0" 13'-6"360 1'-0" 1'-0" 2'-0" 3'-6" 5'-6" 6'-0" 8'-6" 12'-6" 1'-0" 2'-0" 4'-0" 5'-6" 9'-0" 10'-0" 12'-0" 14'-0"560 1'-0" 1'-0" 1'-6" 3'-6" 5'-6" 6'-6" 9'-6" 13'-6" 1'-0" 3'-0" 5'-0" 7'-0" 10'-0" 11'-0" 13'-6" 15'-0"
16"
210 1'-0" 1'-0" 1'-0" 1'-0" 1'-0" 1'-0" 3'-6" 6'-0" 10'-0" 1'-0" 1'-0" 1'-0" 1'-6" 4'-6" 5'-6" 10'-0" 12'-6" 16'-0"230 1'-0" 1'-0" 1'-0" 1'-0" 1'-6" 2'-0" 4'-0" 6'-6" 11'-0" 1'-0" 1'-0" 1'-0" 2'-6" 5'-0" 6'-0" 10'-6" 13'-6" 16'-6"360 1'-0" 1'-0" 1'-0" 1'-0" 3'-0" 4'-0" 6'-6" 10'-0" 13'-6" 1'-0" 1'-0" 2'-0" 4'-0" 7'-6" 8'-6" 13'-0" 14'-6" 17'-0"560 1'-0" 1'-0" 1'-0" 1'-0" 2'-6" 3'-6" 7'-0" 11'-0" 15'-0" 1'-0" 1'-0" 3'-6" 5'-6" 9'-0" 10'-0" 14'-6" 16'-0" 18'-0"
Table B—Intermediate or Cantilever Support (Minimum distance from edge of hole to inside face of nearest intermediate or cantilever support)
■ Rectangular holes based on measurement of longest side.
■ Holes may be located vertically anywhere within the web. Leave 1⁄8" of web (minimum) at top and bottom of hole.■ Knockouts are located in web at approximately 12" on -centre; they do not affect hole placement and may be
located in the hatched zone.■ For simple span (5' minimum) uniformly loaded joists meeting the requirements of this guide, one maximum
size round hole may be located at the centre of the joist span provided that no other holes occur in the joist.■ Distances are based on the maximum uniform loads shown in this guide. For other load conditions or hole
configurations use Forte® software or contact your Weyerhaeuser representative.
DO NOT cut or notch flange.
DO NOT cut holes in cantilever
reinforcement.
Closely grouped round holes are permitted if the group perimeter
meets requirements for round or square holes
General Notes
For how to use these tables, see page 24
17Trus Joist® TJI Joist® Specifier's Guide (W. Canada) TJ-4500 | November 2018
SECTION 2: 18" AND 20" TJI® JOISTSThis section contains design information for 18" and 20" deep Trus Joist® TJI® joists used in residential,
multi-family, or light-commercial applications. 18" and 20" deep TJI® joists are readily available through your local Weyerhaeuser dealer or distributor.
Offered with the flange sizes shown below, they come in lengths up to 60' (in 1' increments). 22" and 24" deep TJI® joists are also available in some regions; for more information, contact your Weyerhaeuser representative.
Design Properties
(1) Caution: Do not increase joist moment design properties by a repetitive-member-use factor.(2) See detail W on page 25 for web stiffener requirements and nailing information.
TJI® 360 joists
3⁄8"
25⁄16"
13⁄8"
18" 20"
TJI® 560 joists
7⁄16"
3½"
13⁄8"
18" 20"
Depth TJI®Joist
Weight(lbs/ft)
Joist Only El x 106
(lbs-in.2)
Factored Resistances — Standard Term
Maximum ResistiveMoment(1)
(ft-lbs)
Maximum Vertical Shear (lbs)
1¾" End Reaction (lbs)
3½" Intermediate Reaction (lbs)
5¼" Intermediate Reaction (lbs)
No Web Stiffeners
With Web Stiffeners(2)
No Web Stiffeners
With Web Stiffeners(2)
No Web Stiffeners
With Web Stiffeners(2)
18"360 3.7 1,085 15,745 3,830 1,705 2,225 3,885 4,400 4,740 5,255560 4.8 1,631 24,205 4,785 1,995 2,680 4,735 5,425 5,455 6,140
20"360 4.0 1,376 17,485 4,200 1,705 2,225 3,885 4,400 4,740 5,255560 5.1 2,064 26,890 5,280 1,995 2,680 4,735 5,425 5,455 6,140
General Notes■ Factored resistances are based on Limit States Design per CSA O86.■ Factored reaction includes all loads on the joist.■ Factored shear is computed at the inside face of supports and includes all loads on the span(s).
Factored shear resistance may sometimes be increased at interior supports. For more information contact your Weyerhaeuser representative.
■ The following formulas approximate the simple span uniform load deflection of Δ (inches):
For TJI® 360 Joists
Δ = +22.5 wL4 El
2.67 wL2 d x 105
For TJI® 560 Joists
Δ = +22.5 wL4 El
2.29 wL2 d x 105
w = uniform load in pounds per linear foot L = span in feet
d = out-to-out depth of the joist in inches El = value from table above
TJI® joists are intended for dry-use applications
Some TJI® joist series may not be available
in your region. Contact your Weyerhaeuser representative for
information.
5⁄8" OSB Subfloor (Glue-nailed)—Vibration-Controlled, Standard Term
Depth TJI®
Directly Applied Ceiling No Directly Applied CeilingSimple or Continuous Span Continuous Span Only Simple or Continuous Span Continuous Span Only
16" o.c. 19.2" o.c. 16" o.c. 19.2" o.c. 16" o.c. 19.2" o.c. 16" o.c. 19.2" o.c.40 PSF Live / 10 PSF Dead Load
18"360 23'-2" 22'-2" 25'-9" 24'-7" 22'-4" 21'-4" 24'-9" 23'-8"560 25'-4" 24'-1" 28'-1" 26'-9" 24'-6" 23'-5" 27'-3" 25'-11"
20"360 24'-9" 23'-8" 27'-6" 26'-4" 23'-10" 22'-9" 26'-5" 25'-3"560 27'-0" 25'-9" 30'-0" 28'-7" 26'-3" 25'-0" 29'-1" 27'-9"
40 PSF Live Load / 30 PSF Dead Load
18"360 23'-2" 21'-9"(1) 25'-9" (1) 22'-5"(1) 22'-4" 21'-4"(1) 24'-9" (1) 22'-5"(1)
560 25'-4" 24'-1" 28'-1" 26'-9" (1) 24'-6" 23'-5" 27'-3" 25'-11" (1)
20"360 24'-9"(1) 21'-9"(1) 26'-11"(1) 22'-5"(1) 23'-10"(1) 21'-9"(1) 26'-5" (1) 22'-5"(1)
560 27'-0" 25'-5"(1) 30'-0"(1) 27'-8" (1) 26'-3" 25'-0"(1) 29'-1" (1) 27'-8" (1)
(1) Web stiffeners are required at intermediate supports of continuous-span joists when the intermediate bearing length is less than 51⁄4" and the span on either side of the intermediate bearing is greater than the following spans:
40 PSF Live Load / 30 PSF Dead LoadTJI® 16" o.c. 19.2" o.c.360 23'-9" 19'-9"560 29'-0" 24'-2"
FLOOR SPAN TABLES
See page 18 for General Notes and how to use this table.
■ Bold italic spans indicate floors that would meet National Building Code of Canada (NBCC) vibration criteria but would be considered by 35% of the population to have marginal or unacceptable performance.
To more accurately predict floor performance, use our TJ-Pro™ Ratings
18Trus Joist® TJI Joist® Specifier's Guide (W. Canada) TJ-4500 | November 2018
FLOOR SPAN TABLES
3⁄4" OSB Subfloor (Glue-nailed)—Vibration-Controlled, Standard Term
Depth TJI®
Directly Applied Ceiling No Directly Applied CeilingSimple or Continuous Span Continuous Span Only Simple or Continuous Span Continuous Span Only
16" o.c. 19.2" o.c. 24" o.c. 16" o.c. 19.2" o.c. 24" o.c. 16" o.c. 19.2" o.c. 24" o.c. 16" o.c. 19.2" o.c. 24" o.c.40 PSF Live / 10 PSF Dead Load
18"360 24'-8" 23'-6" 22'-3"(1) 27'-4" 26'-1" 24'-2" (1) 23'-10" 22'-8" 21'-5"(1) 26'-4" 25'-1" 23'-9" (1)
560 26'-10" 25'-7" 24'-2" 29'-9" 28'-4" 26'-10" (1) 26'-2" 24'-10" 23'-5" 29'-0" 27'-6" 26'-0" (1)
20"360 26'-4" 25'-1" 23'-4"(1) 29'-2" 27'-10"(1) 24'-2"(1) 25'-5" 24'-3" 22'-11"(1) 28'-2" 26'-10" (1) 24'-2"(1)
560 28'-8" 27'-4" 25'-9" 31'-10" 30'-3" 28'-8" (1) 27'-11" 26'-6" 25'-0" 30'-11" 29'-5" 27'-9" (1)
40 PSF Live Load / 30 PSF Dead Load
18"360 24'-8"(1) 21'-9"(1) 17'-4"(1) 26'-11" (1) 22'-5"(1) 17'-11"(1) 23'-10"(1) 21'-9"(1) 17'-4"(1) 26'-4" (1) 22'-5"(1) 17'-11"(1)
560 26'-10" 25'-5"(1) 20'-4"(1) 29'-9" (1) 27'-8" (1) 22'-1"(1) 26'-2" 24'-10"(1) 20'-4"(1) 29'-0" 27'-6" (1) 22'-1"(1)
20"360 26'-1"(1) 21'-9"(1) 17'-4"(1) 26'-11"(1) 22'-5"(1) 17'-11"(1) 25'-5"(1) 21'-9"(1) 17'-4"(1) 26'-11" (1) 22'-5"(1) 17'-11"(1)
560 28'-8" 25'-5"(1) 20'-4"(1) 31'-10" (1) 27'-8"(1) 22'-1"(1) 27'-11" 25'-5"(1) 20'-4"(1) 30'-11" (1) 27'-8" (1) 22'-1"(1)
■ Bold italic spans indicate floors that would meet National Building Code of Canada (NBCC) vibration criteria but would be considered by 35% of the population to have marginal or unacceptable performance.
■ Bold italic spans indicate floors that would meet National Building Code of Canada (NBCC) vibration criteria but would be considered by 35% of the population to have marginal or unacceptable performance.
(1) Web stiffeners are required at intermediate supports of continuous-span joists when the intermediate bearing length is less than 51⁄4" and the span on either side of the intermediate bearing is greater than the following spans:
TJI® 40 PSF Live / 10 PSF Dead Load 40 PSF Live Load / 30 PSF Dead Load16" o.c. 19.2" o.c. 24" o.c. 16" o.c. 19.2" o.c. 24" o.c.
360 Not Required 26'-8" 21'-3" 23'-9" 19'-9" 15'-10"560 Not Required 26'-0" 29'-0" 24'-2" 19'-3"
7⁄8" OSB Subfloor (Glue-nailed)—Vibration-Controlled, Standard Term
Depth TJI®
Directly Applied Ceiling No Directly Applied CeilingSimple or Continuous Span Continuous Span Only Simple or Continuous Span Continuous Span Only
16" o.c. 19.2" o.c. 24" o.c. 16" o.c. 19.2" o.c. 24" o.c. 16" o.c. 19.2" o.c. 24" o.c. 16" o.c. 19.2" o.c. 24" o.c.40 PSF Live / 10 PSF Dead Load
18"360 26'-0" 24'-9" 23'-4"(1) 28'-9" 27'-5"(1) 24'-2"(1) 25'-2" 23'-11" 22'-6"(1) 27'-10" 26'-6" 24'-2"(1)
560 28'-3" 26'-11" 25'-4" 31'-4" 29'-10" 28'-1"(1) 27'-7" 26'-2" 24'-8" 30'-7" 29'-0" 27'-4"(1)
20"360 27'-9" 26'-6" 23'-4"(1) 30'-9" 29'-4"(1) 24'-2"(1) 26'-10" 25'-7" 23'-4"(1) 29'-9" 28'-3"(1) 24'-2"(1)
560 30'-2" 28'-9" 27'-1"(1) 33'-9" 31'-10" 29'-9"(1) 29'-5" 28'-0" 26'-3"(1) 32'-8" 31'-0" 29'-2"(1)
40 PSF Live Load / 30 PSF Dead Load
18"360 26'-0"(1) 21'-9"(1) 17'-4"(1) 26'-11"(1) 22'-5"(1) 17'-11"(1) 25'-2"(1) 21'-9"(1) 17'-4"(1) 26'-11"(1) 22'-5"(1) 17'-11"(1)
560 28'-3" 25'-5"(1) 20'-4"(1) 31'-4"(1) 27'-8"(1) 22'-1"(1) 27'-7" 25'-5"(1) 20'-4"(1) 30'-7"(1) 27'-8"(1) 22'-1"(1)
20"360 26'-1"(1) 21'-9"(1) 17'-4"(1) 26'-11"(1) 22'-5"(1) 17'-11"(1) 26'-1"(1) 21'-9"(1) 17'-4"(1) 26'-11"(1) 22'-5"(1) 17'-11"(1)
560 30'-2"(1) 25'-5"(1) 20'-4"(1) 33'-3"(1) 27'-8"(1) 22'-1"(1) 29'-5"(1) 25'-5"(1) 20'-4"(1) 32'-8"(1) 27'-8"(1) 22'-1"(1)
(1) Web stiffeners are required at intermediate supports of continuous-span joists when the intermediate bearing length is less than 51⁄4" and the span on either side of the intermediate bearing is greater than the following spans:
TJI® 40 PSF Live / 10 PSF Dead Load 40 PSF Live Load / 30 PSF Dead Load(3)
16" o.c. 19.2" o.c. 24" o.c. 16" o.c. 19.2" o.c. 24" o.c.360 Not Required 26'-8" 21'-3" 23'-9" 19'-9" 15'-10"560 Not Required 26'-0" 29'-0" 24'-2" 19'-3"
General Notes■ Tables are based on: – Clear distance between supports. – Minimum bearing length of 1¾" end (no web stiffeners) and 3½" intermediate. – Limit States Design per CSA O86. – Uniform loads. – Single layer of appropriate span-rated OSB. – NBCC vibration criteria as ratified by Canadian Construction Materials Centre
(CCMC).
■ Long term deflection under dead load, which includes the effect of creep, has not been considered.
■ For continuous spans, ratio of short span to long span should be 0.4 or greater to prevent uplift.
■ Spans generated from Weyerhaeuser software may exceed the spans shown in these tables because software reflects actual design conditions.
■ For multi-family applications and other loading conditions not shown, refer to Weyerhaeuser software.
How to Use These Tables1. Determine the the subflooring thickness and applicable live and dead loads.
2. Determine whether the ceiling will be directly applied and what the span condition is (simple or continuous).
3. Select on-centre spacing.
4. Scan down the column until you meet or exceed the span of your application.
5. Select TJI® joist and depth.
To more accurately predict floor performance, use our TJ-Pro™ Ratings
19Trus Joist® TJI Joist® Specifier's Guide (W. Canada) TJ-4500 | November 2018
ROOF SPAN TABLE
* Indicates value does not control.
Roof—Factored Resistance, Standard Term (PLF)
Depth TJI®
Unfactored Deflection Resistance
Factored Strength
Resistance
Unfactored Deflection Resistance
Factored Strength
Resistance
Unfactored Deflection Resistance
Factored Strength
Resistance
Unfactored Deflection Resistance
Factored Strength
Resistance
Unfactored Deflection Resistance
Factored Strength
Resistance
Live Load L/360
Total Load L/180
Total Load
Live Load L/360
Total Load L/180
Total Load
Live Load L/360
Total Load L/180
Total Load
Live Load L/360
Total Load L/180
Total Load
Live Load L/360
Total Load L/180
Total Load
Roof Joist Horizontal Clear Span12' 14' 16' 18' 20'
18"360 * * 255 * * 219 * * 192 * * 171 * * 154560 * * 311 * * 267 * * 234 * * 208 * * 188
20"360 * * 255 * * 219 * * 192 * * 171 * * 154560 * * 311 * * 267 * * 234 * * 208 * * 188
22' 24' 26' 28' 30'
18"360 * * 140 * * 128 81 * 118 66 * 110 54 * 103560 * * 171 * * 156 * * 144 * * 134 80 * 125
20"360 * * 140 * * 128 * * 118 * * 110 68 * 103560 * * 171 * * 156 * * 144 * * 134 * * 125
How to Use This Table1. Calculate actual factored total load and unfactored snow and total load on the
joist in pounds per linear foot (plf).
2. Select appropriate Roof Joist Horizontal Clear Span. For slopes greater than 2:12 (up to a maximum of 3:12), approximate the increased dead load by multiplying the joist horizontal clear span by the Slope Factor on page 31.
3. Scan down the columns to find a TJI® joist that meets or exceeds the actual unfactored snow and total loads, and the factored total load. All three columns must be checked.
General Notes■ Table is based on: – Minimum bearing length of 1¾" end and 3½" intermediate, without web
stiffeners – Uniform loads. – More restrictive of simple or continuous span. – Roof slopes of ¼:12 minimum, 3:12 maximum. – No composite action provided by sheathing.
ROOF LOAD TABLE
O.C. Spacing Depth TJI® Unfactored Snow Load (LL) and Dead Load (DL) in PSF25LL + 15DL 30LL + 15DL 40LL + 15DL 50LL + 15DL
16"18"
360 35'-3" 33'-1" 29'-6" 24'-9"560 40'-5" 37'-11" 34'-4" 30'-2"
20"360 38'-2" 35'-10" 29'-6" 24'-9"560 43'-9" 41'-1" 35'-11" 30'-2"
19.2"18"
360 33'-1" 30'-4" 24'-6" 20'-7"560 37'-11" 35'-7" 29'-11" 25'-1"
20"360 34'-5" 30'-4" 24'-6" 20'-7"560 41'-1" 37'-0" 29'-11" 25'-1"
24"18"
360 27'-6" 24'-3" 19'-7" 16'-5"560 33'-6" 29'-7" 23'-11" 20'-1"
20"360 27'-6" 24'-3" 19'-7" 16'-5"560 33'-6" 29'-7" 23'-11" 20'-1"
Roof—Maximum Horizontal Clear Spans, Standard Term (slopes of 3:12 or less)
General Notes■ Table is based on: – Minimum bearing length of 1¾" end and 3½" intermediate, without web stiffeners. – Uniform loads. – More restrictive of simple or continuous span. – Roof slopes of ¼:12 minimum, 3:12 maximum.■ Unfactored total load joist deflection limited to L/180.■ Unfactored live load joist deflection limited to L/360.■ For continuous spans, ratio of short span to long span should be 0.4 or greater to prevent uplift.■ A support beam or wall at the high end is required. Ridge board applications do not provide
adequate support.■ For flat roofs or other loading conditions not shown, refer to Weyerhaeuser software.
How to Use This Table1. Determine appropriate unfactored snow and dead load.
2. Scan down the column until you find a span that meets or exceeds the span of your application.
3. Select TJI® joist and on-centre spacing.
20Trus Joist® TJI Joist® Specifier's Guide (W. Canada) TJ-4500 | November 2018
CANTILEVERS
PB1 When specified in design software or layouts, one of the above bracing options is required
Two 2½" screws for 2x_ strapping connections
Two 8d (0.113" x 2½") nails or 2½" screws, typical
Apply subfloor adhesive to all contact surfaces
Directly applied ceiling
TJI® joists are intended for dry-use applications
5" to 24"
1 ⁄3
1 ⁄3
8' max. ty
pical
1 ⁄3
1½ times
cantilever length
Cantilever
length
4'-0" maxim
um
(uniform loads only)
Less than 5"
1¼" TimberStrand® LSL rim board, typical. Nail with 10d (0.131" x 3") nails, one each at top and bottom flange.
8" diameter maximum hole for 18"–24" deep blocking panels; 6" diameter maximum for blocking panels less than 12" long. Do not cut flanges.
Blocking panel between each joist. Nail with connections equivalent to floor panel schedule.
1¼"TimberStrand® LSL rim board closure, typical
These Conditions Are NOT Permitted:
DO NOT bevel cut joist beyond inside face of wall.
DO NOT use sawn lumber for rim board or blocking as it may shrink after installation. Use only engineered lumber
DO NOT install hanger overhanging face of plate or beam. Flush bearing plate with inside face of wall or beam.
E1
E1W
F1
PB1
E1 Web stiffeners required both sides at E1W
ONLY
PB1 Cantilever back span must be permanently braced with either direct-applied ceiling along entire length or permanent bracing at 1/3 points. See detail PB1 below for connections.
Wood backer at F1
F1 Nail through 2x_ cantilever, wood backer, and TJI® joist web with two rows 10d (0.148" x 3") nails at 6" on-centre, clinched. Use 16d (0.135" x 3½") nails with TJI® 560 and 560D joists. F1 applies to uniformly loaded joists only.
For E1 and E1W details, also refer to our cover sheets and AutoCAD details online at weyerhaeuser.com/woodproducts/software-learning
21Trus Joist® TJI Joist® Specifier's Guide (W. Canada) TJ-4500 | November 2018
CANTILEVERS
Depth TJI®Roof Truss Span
Section A: Cantilevers less than 5" (Brick Ledge) Section B: Cantilevers 5" to 24"Unfactored Roof Total Load Unfactored Roof Total Load
35 PSF 45 PSF 55 PSF 35 PSF 45 PSF 55 PSFOn-Centre Joist Spacing On-Centre Joist Spacing
16" 19.2" 24" 16" 19.2" 24" 16" 19.2" 24" 16" 19.2" 24" 16" 19.2" 24" 16" 19.2" 24"
18" or
20" 360
22' X24' X X26' X X X28' X X X30' X X X X E1W32' X X X X X X E1W34' X X X X X X E1W36' X X X X X X X38' X X X X X X X E1W X40' X X X X X X X X E1W X
18" or
20" 560
22'24' X26' X28' X X30' X X X32' X X X34' X X X36' X X X X X38' X X X X X X40' X X X X X X E1W
Cantilever Reinforcement
Cantilevers Less than 5" (Brick Ledge)See Section A of cantilever table
2'-0"
Less than 5"
Roof truss span
40 psf live load
TJI® joists may be cantilevered up to 5" when supporting roof load, assuming: ■ simple or continuous span ■ L1 ≤ L2 ■ minimum backspan = 2x cantilever length
L2 L1
See page 20 for cantilever details.
How to Use This Table1. Identify TJI® joist and depth.
2. Locate the Roof Truss Span (horizontal) that meets or exceeds your condition.
3. Identify the cantilever condition (less than 5" or 5" to 24") and locate the Unfactored Roof Total Load and On-Centre Joist Spacing for your application.
4. Scan down to find the appropriate cantilever detail and refer to drawing on page 20: – Blank cells indicate no reinforcement is required. – X indicates cantilever will not work. Use Forte® or Javelin® software,
or reduce spacing of joists and recheck table.
General Notes■ Table is based on:
– 15 psf unfactored roof dead load on a horizontal projection. – 80 plf unfactored exterior wall load with 3'-0" maximum width window or door
openings. For larger openings, or multiple 3'-0" width openings spaced less than 6'-0" on-centre, additional joists beneath the opening's trimmers may be required.
– 40/10 psf floor load. – More restrictive of simple or continuous span. – Roof truss with 24" soffits.
■ Designed for 2x4 and 2x6 plate widths.
■ For conditions beyond the scope of this table, including cantilevers longer than 24", use Forte® or Javelin® software.
TJI® joists may be cantilevered 5" to 24" when supporting roof load, assuming: ■ simple or continuous span ■ L1 ≤ L2 ■ minimum backspan = 2x cantilever length
2'-0"
5" to 24"
Roof truss span40 psf live load
L2 L1
Cantilevers 5" to 24"See Section B of cantilever table
22Trus Joist® TJI Joist® Specifier's Guide (W. Canada) TJ-4500 | November 2018
FRAMING CONNECTORS (SIMPSON STRONG-TIE®)
Hanger information in this section was provided by Simpson Strong-Tie®. For additional information, please
refer to their literature.
Depth TJI®
Single Joist—Top Mount Single Joist—Face Mount Face Mount Skewed 45° Joist Hanger
Hanger Fac. Res. (lbs)
NailingHanger Fac. Res.
(lbs)Nailing
Hanger Fac. Res. (lbs)
NailingHeader Joist Header Joist Header Joist
18"360 MIT3518 1,995 16d 10d x 1½" MIU2.37/18 1,995 10d 10d x 1½" SUR/L2.37/14 2,260 16d 10d x 1½"560 MIT418 2,305 16d 10d x 1½" MIU3.56/18 2,305 10d 10d x 1½" SUR/L414 2,360 16d 16d
20"360 MIT3520 1,995 16d 10d x 1½" MIU2.37/20 1,995 10d 10d x 1½" SUR/L2.37/14 2,260 16d 10d x 1½"560 MIT420 2,305 16d 10d x 1½" MIU3.56/20 2,305 10d 10d x 1½" SUR/L414 2,360 16d 16d
Depth TJI®
Double Joist—Top Mount Double Joist—Face Mount
Hanger Fac. Res. (lbs)
NailingHanger Fac. Res.
lbs)Nailing
Header Joist Header Joist
18" 360 LBV4.75/18 3,125 16d 10d x 1½" MIU4.75/18 3,485 16d 10d x 1½"560 B7.12/18 3,910 16d 16d HU414-2 4,615 16d 16d
20"360 LBV4.75/20 3,125 16d 10d x 1½" MIU4.75/20 3,485 16d 10d x 1½"560 B7.12/20 3,910 16d 16d HU414-2 4,615 16d 16d
Single Joist, Top Mount
Double Joist, Top Mount
Single Joist, Face Mount
Double Joist, Face Mount
Face Mount Skewed 45° Joist Hanger
Depth TJI®
Variable Slope Seat Connector(1)
Hanger Fac. Res. (lbs)
NailingHeader Joist
18"–20" 360 VPA35 1,805 10d 10d x 1½"560 VPA4 1,855 10d 10d x 1½"
Depth TJI®
Variable Slope Seat Joist Hanger(2)
Hanger
Fac. Res. (lbs) Nailing
Sloped Only
Sloped and
SkewedHeader Joist
18"–20" 360 LSSUI35 2,250 1,485 10d 10d x 1½"560 LSSU410 2,635 1,665 16d 10d x 1½"
Variable Slope Seat Connector
Variable Slope Seat Joist Hanger
General NotesBold italic hangers require web stiffeners.
Factored resistances will vary with different nailing criteria or other support conditions; contact your Weyerhaeuser representative for assistance.
■ Hanger factored resistances shown are either joist bearing or hanger factored resistance—whichever is less. Joist end reaction must be checked to ensure it does not exceed the factored resistance shown in the tables.
■ All factored resistances are for downward loads, standard term.
■ Fill all round, dimple, and positive-angle nail holes.
■ Use sloped seat hangers and beveled web stiffeners when TJI® joist slope exceeds 1⁄4:12. Maximum slope for 18" and 20" TJI® joists is 3:12.
■ Leave 1⁄16" clearance (1⁄8" maximum) between the end of the supported joist and the header or hanger.
■ Nails: 16d = 0.162" x 31⁄2", 10d = 0.148" x 3", and 10d x 11⁄2" = 0.148" x 11⁄2".
23Trus Joist® TJI Joist® Specifier's Guide (W. Canada) TJ-4500 | November 2018
FRAMING CONNECTORS (USP STRUCTURAL CONNECTORS®)
Hanger information in this section was provided by USP Structural Connectors®. For additional information, please refer
to their literature.
Joist Double Joist—Top Mount Double Joist—Face Mount
Depth TJI® Hanger Fac. Res. (lbs)
NailingHanger Fac. Res.
(lbs)Nailing
Header Joist Header Joist
18" 360 THO23180-2 4,375 16d 10d THF23160-2 3,990 10d 10d560 BPH7118 4,305 16d 10d HD7140 4,180 16d 16d
20"360 THO23200-2 4,375 16d 10d THF23160-2 3,990 10d 10d560 BPH7120 4,305 16d 10d HD7160 4,615 16d 16d
(1) Miter cut is required at end of joists.
Joist Single Joist—Top Mount Single Joist—Face Mount Face Mount Skewed 45° Joist Hanger
Depth TJI® Hanger Fac. Res. (lbs)
NailingHanger Fac. Res.
(lbs)Nailing
Hanger Fac. Res. (lbs)
NailingHeader Joist Header Joist Header Joist
18"360 TFI3518 1,995 16d 10d x 1½" THF23180 1,995 10d 10d x 1½" SKH2324L/R 1,755 10d 10d x 1½"560 TFI418 2,305 16d 10d x 1½" THF35157 2,305 10d 10d x 1½" SKH414L/R(3) 2,305 16d 16d
20"360 TFI3520 1,995 16d 10d x 1½" THF23180 1,995 10d 10d x 1½" SKH2324L/R(4) 1,755 10d 10d x 1½"560 TFI420 2,305 16d 10d x 1½" THF35157 2,305 10d 10d x 1½" SKH414L/R(3) 2,305 16d 16d
Single Joist, Top Mount
Single Joist, Face Mount
Face Mount Skewed 45° Joist Hanger
Double Joist, Top Mount
Double Joist, Face Mount
Depth TJI®
Variable Slope Seat Connector(5)
Hanger Fac. Res. (lbs)
NailingHeader Joist
18"–20" 360 TMP23 2,175 10d 10d x 1½"560 TMP4 2,175 10d 10d x 1½"
Depth TJI®
Variable Slope Seat Joist Hanger(2)
Hanger
Fac. Res. (lbs) Nailing
Sloped Only
Sloped and
SkewedHeader Joist
18"–20" 360 LSSH23 1,990 1,990 10d 10d x 1½"560 LSSH35 2,515 2,390 16d 10d x 1½"
Variable Slope Seat Connector
Variable Slope Seat Joist Hanger
Support Requirements
■ Support material assumed to be Trus Joist® engineered lumber or sawn lumber (Douglas fir, southern pine, or spruce-pine-fir species).
■ Minimum support width for single- and double-joist top mount hangers is 3".
■ Minimum support width for face mount hangers with 10d and 16d nails (clinched) is 1½" and 1¾", respectively.
Also see General Notes on page 22.
Table footnotes for pages 22 and 23: (1) For joists 18" and deeper, use VPA for 3:12 slopes only.(2) For joists 18" and deeper, use only with slopes up to 3:12 and skews up to 45°. Additional lateral restraint required for 18" and 20" joists.(3) Miter cut required at end of joist.(4) Additional lateral restraint required.(5) For joist depths 18" and deeper, use only on slopes of 1:12 to 3:12.
24Trus Joist® TJI Joist® Specifier's Guide (W. Canada) TJ-4500 | November 2018
ALLOWABLE HOLES
■ Rectangular holes based on measurement of longest side.
DO NOT cut or notch flange.
Table B—Intermediate or Cantilever Support (Minimum distance from edge of hole to inside face of nearest intermediate or cantilever support)
Depth TJI®• Round Hole Size ■ Square or Rectangular Hole Size
4" 5" 6" 6½" 7" 8" 10" 12" 14¾" 16¾" 4" 5" 6" 6½" 7" 8" 10" 12" 14¾" 16¾"
18"360 1'-0" 1'-0" 1'-0" 1'-0" 1'-6" 3'-0" 6'-0" 9'-0" 14'-6" 1'-0" 1'-6" 4'-0" 5'-6" 6'-6" 9'-0" 14'-6" 16'-6" 19'-0"560 1'-0" 1'-0" 1'-0" 1'-0" 1'-0" 2'-0" 6'-0" 10'-0" 15'-6" 1'-0" 3'-6" 6'-0" 7'-6" 8'-6" 11'-6" 16'-6" 18'-0" 19'-6"
20"360 1'-0" 1'-0" 1'-0" 1'-0" 1'-0" 1'-0" 3'-0" 6'-0" 11'-0" 15'-0" 1'-0" 1'-0" 1'-6" 2'-6" 4'-0" 7'-0" 12'-6" 16'-6" 19'-0" 20'-6"560 1'-0" 1'-0" 1'-0" 1'-0" 1'-0" 1'-0" 1'-6" 5'-6" 11'-6" 15'-6" 1'-0" 1'-0" 3'-0" 4'-6" 6'-0" 8'-6" 14'-0" 17'-6" 19'-0" 20'-6"
Depth TJI®• Round Hole Size ■ Square or Rectangular Hole Size
4" 5" 6" 6½" 7" 8" 10" 12" 14¾" 16¾" 4" 5" 6" 6½" 7" 8" 10" 12" 14¾" 16¾"
18"360 1'-0" 1'-0" 1'-0" 1'-0" 1'-0" 2'-0" 4'-0" 5'-6" 9'-6" 1'-0" 1'-6" 3'-0" 4'-0" 4'-6" 6'-0" 10'-0" 11'-0" 13'-6"560 1'-0" 1'-0" 1'-0" 1'-0" 1'-0" 2'-0" 4'-6" 7'-0" 10'-6" 2'-0" 3'-6" 5'-0" 5'-6" 6'-6" 8'-0" 11'-0" 12'-0" 14'-0"
20"360 1'-0" 1'-0" 1'-0" 1'-0" 1'-0" 1'-0" 2'-0" 4'-0" 7'-0" 10'-0" 1'-0" 1'-0" 1'-6" 2'-0" 3'-0" 4'-6" 8'-0" 11'-6" 13'-6" 15'-6"560 1'-0" 1'-0" 1'-0" 1'-0" 1'-0" 1'-0" 2'-0" 4'-6" 8'-6" 11'-0" 1'-0" 1'-6" 3'-6" 4'-6" 5'-0" 7'-0" 10'-6" 13'-0" 14'-6" 15'-6"
Table A—End Support (Minimum distance from edge of hole to inside face of nearest end support)
General Notes■ Holes may be located vertically anywhere within the web. Leave 1⁄8" of web
(minimum) at top and bottom of hole.■ Knockouts are located in web at approximately 12" on -centre; they do not affect
hole placement and may be located in the hatched zone.■ For simple span (5' minimum) uniformly loaded joists meeting the requirements of
this guide, one maximum size round hole may be located at the centre of the joist span provided that no other holes occur in the joist.
■ Distances are based on the maximum uniform loads shown in this guide. For other load conditions or hole configurations, use Forte® software or contact your Weyerhaeuser representative.
How to Use These Tables1. Using Table A, Table B, or both if required, determine the hole shape/size and
select the TJI® joist and depth.
2. Scan horizontally until you intersect the correct hole size column.
3. Measurement shown is minimum distance from edge of hole to support.
4. Maintain the required minimum distance from the end and the intermediate or cantilever support.
Minimum distance from Table A Minimum distance from Table B
OR
Do not cut holes larger than 1½" in cantilever
2 x D1 minimum
(applies to all holes except knockouts)
L1D1 2 x L2
minimumL2 D2
No field cut holes
in hatched zones
Closely grouped round holes are permitted if the group perimeter meets the requirements for round or
square holes.
6"6" 6"
6" 6"
1½" round holes may be cut anywhere in web outside of hatched
zone if they are located 3" away horizontally (edge-to-edge)
from a larger hole.
25Trus Joist® TJI Joist® Specifier's Guide (W. Canada) TJ-4500 | November 2018
WARNING Joists are unstable until
laterally braced. See Warning Notes on page 6.
TJI® Joist Nailing Requirements at Bearing
11⁄8" TJ® Rim Board (with depths ≤ 16"), 1¼" TimberStrand® LSL rim board, or TJI® 110 rim joist: One 10d (0.131" x 3") nail into each flangeTJI® 210, 230, and 360 rim joist: One 16d (0.135" x 3½") nail into each flange
Rim to TJI® Joist
Squash Blocks to TJI® Joist (Load bearing wall above)
One 10d (0.128" x 3") nail into each flange
TJI® 560 rim joist: Toenail with
10d (0.128" x 3") nails, one each side
of TJI® joist flange
TJI® 560 floor joist
TJI® 560 rim joist
Top View1¾" minimum
bearing
Also see detail B2 on page 26
Locate rim board joint between joists
TJI® Joist to Bearing Plate
11⁄8" TJ® Rim Board (with depths ≤ 16") or 1¼" TimberStrand® LSL
One 8d (0.113" x 21⁄2") nail each side. Drive nails at an angle at least 11⁄2" from end.
13⁄4" minimum bearing at end support
Shear transfer nailing: Use connections equivalent to floor panel nailing schedule
31⁄2" minimum intermediate bearing; 51⁄4" may be required
for maximum capacity
Web Stiffener Attachment
Gap: 1⁄8" minimum 2¾" maximum
Nailing: See table below
Web stiffener each side: See sizes below
Tight fit
1" (1½" for TJI® 560 joists)
W
Web Stiffener Requirements
TJI®Min. Web Stiffener
Size
Nailing Requirements
Type Quantity
110 5⁄8" x 25⁄16"(1)
8d (0.113" x 2½") 3210 ¾" x 25⁄16"(1)
230, 360
7⁄8" x 25⁄16"(1)
560 2x4(2) 16d (0.135" x 3½") 3
(1) CSA standards 0151, 0325, or 0437 with face grain vertical(2) Construction grade or better
This section contains framing details and design information applicable to all joist depths shown in this guide.
SECTION 3: DESIGN INFORMATION FOR ALL JOISTS
TJI® Joist Floor Framing
TJI® joist floor framing does not require bridging or mid-span blocking
L1
A3
E1
B1
B2
B3
B4
A1E2
A2
L4
P2
L5
P1
E1W CS
L2
H3
H2
L3
H1
Joists must be laterally supported at cantilever and end bearings by blocking panels, hangers, or direct attachment to a rim board or rim joist
See Exterior Deck Attachment on
page 27
See Allowable Holes on pages 16 and 24
Protect untreated wood from direct contact with concrete
Safety bracing (1x4 minimum) placed at 8' on-centre (6' on-centre for TJI® 110 joists) and extended to a braced end wall. Fasten at each joist with two 8d (0.113" x 2½") nails minimum.
1½" knockouts at approximately
12" on-centre
Rim board joint between joists
Structural sheathing
11⁄8" TJ® Rim Board (with depths ≤ 16") or 1¼" TimberStrand® LSL
LA
26Trus Joist® TJI Joist® Specifier's Guide (W. Canada) TJ-4500 | November 2018
FLOOR DETAILS
Top mount hanger
Web stiffeners required if sides of hanger do not laterally support at least 3⁄8" of TJI® joist top flange
Face mount hanger
(1) If necessary, increase filler and backer block height for face mount hangers and maintain 1⁄8" gap at top of joist. See detail W. Filler and backer block dimensions should accommodate required nailing without splitting. The suggested minimum length is 24" for filler and 12" for backer blocks.
(2) Clinch nails when possible.
TJI® 110 210 230 or 360 360 560Depth 9½" or 117⁄8" 14" 9½" or 117⁄8" 14" or 16" 9½" or 117⁄8" 14" or 16" 18" or 20" 9½" or 117⁄8" 14" or 16" 18" or 20"
Filler Block(1) (Detail H2) 2x6 2x8 2x6 + 3⁄8"
sheathing2x8 + 3⁄8" sheathing
2x6 + ½" sheathing
2x8 + ½" sheathing
2x12 + ½" sheathing
Two 2x6
Two 2x8
Two 2x12
Cantilever Filler (Detail E4)
2x6 4'-0" long
2x10 6'-0" long
2x6 + 3⁄8" sheathing, 4'-0" long
2x10 + 3⁄8" sheathing, 6'-0" long
2x6 + ½" sheathing, 4'-0" long
2x10 + ½" sheathing, 6'-0" long
Not applicable Not applicable
Backer Block(1) (Detail F1 or H2)
5⁄8" or ¾" ¾" or 7⁄8" 7⁄8" or 1" net 2x6 2x8 2x12
Nail SizeFiller
10d (0.128" x 3")16d (0.135" x 3½") 16d (0.135" x 3½")
Backer 10d (0.128" x 3") 10d (0.128" x 3")Nail
Quantity(2)Filler
10 (15 for multi-family applications)15 one side 10 (15 for multi-family) each side 15 each side
Backer 15 10 (15 for multi-family) 15
Filler and Backer Block Sizes
Load bearing or braced/shear wall above (must stack over wall below)
Blocking panel: 11⁄8" TJ® Rim Board (with depths ≤ 16"), 1¼" TimberStrand® LSL, or TJI® joist
Load bearing wall above (must stack over wall below)
Blocking panels may be required with braced/shear walls above or below —see detail B1
Blocking panels may be required with braced/shear walls above or below —see detail B1
Flush bearing plate required. Maximum ¼" overhang permitted at beam.
Also see nailing requirements on page 25
2x4 minimum squash blocks
B2 WB2B1
WB1 B3 WB3
H1 H3
2x4 minimum squash blocks; match bearing area of column above
Load from above
1⁄16"
Use 2x4 minimum squash blocks to transfer load around TJI® joist
CS
1⁄16"
Web stiffeners required on both sides at B1W ONLY. See footnote
(1) under span tables.
Web stiffeners required on both sides at B2W ONLY. See footnote (1) under span tables.
Web stiffeners required on both sides at B3W ONLY. See footnote (1) under span tables.
No load bearing wall above
Fastener Spacing for TJI® JoistsClosest On-Centre Spacing per Row(1)
TJI®
8d (0.113" x 2½"), 8d (0.131" x 2½"), 10d (0.128" x 3"), 12d (0.128" x 3¼")
10d (0.148" x 3"), 12d (0.148" x 3¼"), 16d (0.135" x 3½")
16d (0.162" x 3½")
110 and 210 4" 4"(2) 6"230 4" 4"(2) 6"
360 and 560 3" 4"(2) 6"
(1) Stagger nails when using 4" on-centre spacing or less and maintain 3⁄8" joist and panel edge distance. One row of fasteners is permitted (two at abutting panel edges) for diaphragms. For other applications, multiple rows of fasteners are permitted if the rows are offset at least 1⁄2" and staggered.
(2) Can be reduced to 3" on-centre for light gauge steel straps with 10d (0.148" x 11⁄2") nails. ■ Maximum spacing of nails is 18" on-centre for joists ≤ 16" deep; 24" on-centre for joists > 16" deep. ■ 14 gauge staples may be substituted for 8d (0.113" x 21⁄2") nails if minimum penetration of 1" is achieved. ■ Table also applies to the attachment of TJI® rim joists and blocking panels to the wall plate.
With top mount hangers, backer block required only for factored downward loads exceeding 395 lbs or for uplift conditions
H2
Backer block both sides of web with single TJI®
joist
Backer block: Install tight to top flange (tight to bottom flange with face mount hangers). Attach per table below.
Filler block: Attach per table below.
27Trus Joist® TJI Joist® Specifier's Guide (W. Canada) TJ-4500 | November 2018
RIM BOARD SELECTION AND INSTALLATION
Also see nailing requirements on page 25
Exterior Deck Attachment
Structural exterior sheathing
Flashing
Treated 2x_ ledger
Staggered bolts
11⁄8" TJ® Rim Board (with depths ≤ 16") or 11⁄4" TimberStrand® LSL
LA
Rim Board Material
Factored Resistance Load(2) (lbs/bolt)
½" Lag Bolt ½" Through Bolt½" Through Bolt with Air Space
11⁄8" TJ® Rim Board(3) 695 1,005890(4)
1¼" TimberStrand® LSL 885 1,050(1) Corrosion-resistant fasteners required in wet-service applications.(2) Factored resistance determined in accordance with ASTM 7672.(3) 11⁄8" TJ® Rim Board is allowed with joist depths ≤ 16" only.(4) Maximum ½" shimmed air space.
A1 A1 W
Blocking panel: 11∕8" TJ® Rim Board (with depths ≤ 16"), 1¼" TimberStrand® LSL, or TJI® joist
Plate nail
Toe nail
Web stiffeners required on both sides at A1W ONLY
A2 Must have 13⁄4" minimum joist bearing at ends. Attach rim joist per fastening instructions in Detail A3.
A2 W
TJI® rim joist
Plate nail
Rim-to-joist nail
Toe nail
Web stiffeners required on both sides at A2W ONLY
Nails Installed on the Narrow Face
Ledger Fastener(1) Factored Resistances
(1) 11⁄8" TJ® Rim Board is allowed with joist depths ≤ 16" only.(2) Can be reduced to 5" on-centre if nail penetration into the narrow edge is no more than 1¼"
(to minimize splitting).(3) Can be reduced to 4" on-centre if nail penetration into the narrow edge is no more than 1¼"
(to minimize splitting).■ To minimize splitting, maintain edge distance and row spacing of 2½ x nail diameter or 3⁄8",
whichever is greater. Multiple rows must be staggered and equally spaced from the centreline of the narrow face axis.
■ 14 gauge staples may be substituted for 8d (0.113" x 2½") nails if minimum penetration of 1" is achieved.
A3 A3 W
Web stiffeners required on both sides at A3W ONLY
11⁄8" TJ® Rim Board (with depths ≤ 16") or
11⁄4" TimberStrand® LSL
2x4 or 2x6 stud wall
When panel thickness exceeds 7⁄8", trim sheathing tongue at rim board
TJI® joist spanning in either direction
Plate nail, typically 16d (0.148" x 3¼") at 16" o.c.
(6" o.c. at braced walls)
Deck nail, typically 8d (0.131" x 21⁄2") at 6" o.c.
Rim board to TJI® joist
Rim board to TJI® joist
TJI® joist to plate
Toe nail, 16d (0.148" x 3¼") at 6" o.c.
Wall sheathing
Web stiffeners on both sides at A3W ONLY
11⁄8" TJ® Rim Board (with depths ≤ 16") or
11⁄4" TimberStrand® LSL
Attach blocking per fastening instructions in Detail A3.
Shimmed Deck AttachmentSiding
Weather-resistive barrier Flashing
Washers or prefab spacers to allow for drainage. Maximum airspace is ½". Add sealant.
Staggered bolts
Treated 2x_ ledger
Structural exterior sheathing
Treated sill plate
11⁄8" TJ® Rim Board (with depths ≤ 16") or
11⁄4" TimberStrand® LSL
Rim or Blocking Material
Uniform Load (PLF) Concentrated Load (lbs)Depth
9½" 117⁄8" 14" 16" 18" 20" All DepthsTJI® rim joist 3,060 2,250 –11⁄8" TJ® Rim Board 7,045(2) 6,625 5,800 – – 4,9301¼" TimberStrand® LSL 7,830(2) 7,250 6,290 5,365 5,450
(1) Values may not be increased for duration of load.(2) Capacity is limited to a maximum of 522 psi in accordance with ASTM D7672.
Vertical Load Transfer at Bearing(1)
General Notes■ Maintain 2" distance (minimum) from edge of ledger to fastener. Stagger bolts.■ Local building codes may require through bolts with washers.■ Lateral restraining connections may be required.
Nail SizeClosest On-Centre Spacing per Row
11⁄8" TJ® Rim Board(1) 1¼" TimberStrand® LSL8d (0.113" or 0.131" x 2½"),
10d (0.128" x 3"), 12d (0.128" x 3¼") 6" 4"
10d (0.148" x 3"), 12d (0.148" x 3¼") 6" 4"16d (0.162" x 3½") 16"(2) 6"(3)
28Trus Joist® TJI Joist® Specifier's Guide (W. Canada) TJ-4500 | November 2018
ROOF FRAMING
TJI® Joist to Bearing PlateEnd Bearing
(1¾" minimum bearing required)
TJI® Joist Nailing Requirements at Bearing (Maximum slope for 18" and 20" joists is 3:12)
Intermediate Bearing (3½" minimum bearing required)
Blocking to Bearing Plate
8d (0.113" x 2½") nail, one each side, 11⁄2" minimum from end
Slopes 3:12 or less: One 8d (0.113" x 2½") nail each side. See detail R7.Slopes greater than 3:12 (for depths ≤ 16" only): Two 8d (0.113" x 2½") nails each side, plus a twist strap and backer block. See detail R7S.
11⁄8" TJ® Rim Board (with depths ≤ 16") or 11⁄4" TimberStrand® LSL: Toenail with 10d (0.131" x 3") nails at 6" on-centre or 16d (0.135" x 3½") nails at 12" on-centreTJI® joist blocking: 10d (0.128" x 3") nails at 6" on-centreShear transfer nailing: Minimum, use connections equivalent to sheathing nail schedule
When slope exceeds 1⁄4:12, a beveled bearing plate, variable slope seat connector, or birdsmouth cut (at low end of joist only) is required
When slope exceeds ¼ :12 for a 2x4 wall or 1∕8 :12 for a 2x6 wall, a beveled bearing plate or variable slope seat connector is required.
R5
R5 R3
R1
R7O
H6
H5
H5
R1
R8
R10
R10
Joists must be laterally supported at cantilever and end bearings by shear blocking, hangers, or direct attachment to a rim board or rim joist
See Allowable Holes on pages 16 and 24
General Notes■ Unless otherwise noted, all details are valid to a
maximum slope of 12:12. 18" and 20" deep joists have a maximum slope of 3:12.
■ Web stiffeners are required if the sides of the hanger do not laterally support at least 3⁄8" of the TJI® joist top flange.
Safety bracing (1x4 minimum) placed at 8' on-centre (6' on-centre for TJI® 110 joists) and extended to a braced end wall. Fasten at each joist with two 8d (0.113" x 21⁄2") nails minimum.
WARNING Joists are unstable until laterally braced.
See Warning Notes on page 6.
These Conditions Are NOT Permitted:
DO NOT bevel cut joist beyond inside face of wall.
DO NOT cut holes too close to support.
Refer to Allowable Holes on pages 16 and 24 for minimum distance from support.
DO NOT overhang birdsmouth cut from inside face of plate.
TJI® joist flange must bear fully on the plate. See detail BC on page 30.
29Trus Joist® TJI Joist® Specifier's Guide (W. Canada) TJ-4500 | November 2018
ROOF DETAILS
See Beveled Plate Requirements on page 30
Birdsmouth Cut
Variable slope seat connector
1⁄3 adjacent span maximum 1⁄3 adjacent span maximum
Birdsmouth CutAllowed at low end of joist only
Beveled 2x4 block
2x4 one side. Use 2x6 if joist spacing is greater than 24" on-centre.
2'-0"
maximum
4'-0"
minimum
10d (0.128" x 3") nails at 8" on-centre
Beveled web stiffeners on both sides
R3 R5
R7WR7 R7
S R8
R9
Birdsmouth CutAllowed at low end of joist only
2'-0"
maximum
Beveled web stiffeners required on both sides. Cut to match roof slope.
2x4 block for soffit support
TJI® joist flange must bear fully on plate Birdsmouth
cut must not overhang inside face of plate
Intermediate Bearing
Twist strap and backer block required at R7S with slopes greater than 3:12. See nailing requirements on page 28.
Blocking panels or shear blocking may be specified for joist stability at intermediate supports
See Beveled Plate Requirements on page 30
Web stiffeners required on both
sides at R7W ONLY
V-cut shear blocking: 1¼" TimberStrand® LSL rim board
Shear blocking: 11⁄8" TJ® Rim Board (with depths ≤ 16"), 1¼" TimberStrand® LSL or TJI® joist
R1 R1 W
R3 W
R10 R10 W
Web stiffeners required on both sides at R1W ONLY
Web stiffeners required on both sides at R3W ONLY
Allowed at low end of joist only
R7S is allowed only with joist depths ≤ 16" .
2'-0"
maximum
4'-0"
minimum
2x4 one side. Use 2x4 both sides if joist spacing is greater than 24" on-centre.Two rows
8d (0.113" x 2½") nails at 8" on-centre
Beveled 2x4 block with beveled web stiffener on opposite side of web
1½"
2x4 one side. Use 2x4 both sides if joist spacing is greater than 24" on-centre.
Filler
Two rows 8d (0.113" x 2½")
nails at 8" on-centre
4'-0"
minimum
2'-0"
maximum
Beveled 2x4 block. Second beveled web stiffener required on opposite side at R10W ONLY.
See Beveled Plate Requirements on page 30
1½"
1⁄3 1⁄3 1⁄3
½
½
Maximum allowable V-cut Allowed hole zone
1⁄3 1⁄3 1⁄3
Field trim to match joist depth at outer edge of wall or locate on wall to match joist depth
Shear Blocking and Ventilation Holes (Roof Only)
For TJI® joists with slopes of 10:12 to 12:12, the vertical depth of the shear blocking at bearing will require 11⁄8" TJ® Rim Board or 1¼" TimberStrand® LSL that is one size deeper than the TJI® joist. DO NOT use 11⁄8" TJ® Rim Board with 18"–20" TJI® joists.
SB
1⁄3
1⁄3
1⁄3
30Trus Joist® TJI Joist® Specifier's Guide (W. Canada) TJ-4500 | November 2018
ROOF DETAILS
Also see General Notes and nailing requirements on page 28.
LSTA24 (Simpson or USP) strap with twelve 10d (0.148" x 1½") nails required at H5S with slopes greater than 3:12
Strap nails: Leave 23⁄8" minimum end distance
Additional blocking may be required for shear transfer
Variable slope joist hanger. See pages 14–15 and 22–23. Beveled web stiffener required both sides.
H5 H5S
H6 H6S
Variable slope joist hanger. See pages 14–15 and 22–23. Beveled web stiffener required both sides.
LSTA18 strap required at H6S with slopes greater than 3:12
Strap nails: Leave 23⁄8" minimum end distance
Filler block: Attach per table below
Backer block: Install tight to bottom flange (tight to top flange with top mount hangers). Attach per table below.
Beveled Plate Requirements
Required Bearing Length
Maximum Slope Without Beveled Plate
1¾" ½ :123½" ¼:125½" 1⁄8:12
Detail H5S is allowed only with joist depths ≤ 16" .
Detail H6S is allowed only with joist depths ≤ 16" .
Birdsmouth CutAllowed at low end of joist only
Double joist may be required when L exceeds joist spacing
2x_ overhang. Notch around TJI® joist top flange.
L
L
Blocking as required
End wall
Strap nails: Leave 23⁄8" minimum end distance, typical
TJI® joist flange must bear fully on plate. Birdsmouth cut must not overhang inside face of plate.
Beveled web stiffener on both sides of TJI® joist web
Additional blocking may be required for shear transfer O BC
LSTA18 (Simpson or USP) strap with twelve 10d (0.148" x 11⁄2") nails
Web stiffeners required on both sides at R14W ONLY
See Beveled Plate Requirements below
R14 R14 W
(1) If necessary, increase filler and backer block height for face mount hangers and maintain 1⁄8" gap at top of joist. See detail W. Filler and backer block dimensions should accommodate required nailing without splitting. The suggested minimum length is 24" for filler and 12" for backer blocks.
(2) Clinch nails when possible.
Filler and Backer Block SizesTJI® 110 210 230 or 360 360 560
Depth 9½" or 117⁄8" 14" 9½" or 117⁄8" 14" or 16" 9½" or 117⁄8" 14" or 16" 18" or 20" 9½" or 117⁄8" 14" or 16" 18" or 20"Filler Block(1)
(Detail H6) 2x6 2x8 2x6 + 3⁄8" sheathing
2x8 + 3⁄8" sheathing
2x6 + ½" sheathing
2x8 + ½" sheathing
2x12 + ½" sheathing
Two 2x6
Two 2x8
Two 2x12
Backer Block(1) (Detail H6)
5⁄8" or ¾" ¾" or 7⁄8" 7⁄8" or 1" net 2x6 2x8 2x12
Nail SizeFiller
10d (0.128" x 3")16d (0.135" x 3½") 16d (0.135" x 3½")
Backer 10d (0.128" x 3") 10d (0.128" x 3")Nail
Quantity(2)Filler
1015 one side 10 each side 15 each side
Backer 15 10 15
31Trus Joist® TJI Joist® Specifier's Guide (W. Canada) TJ-4500 | November 2018
CUT LENGTH CALCULATION
MATERIAL WEIGHTS AND CONVERSION TABLES
Slope 2½:12 3:12 3½:12 4:12 4½:12 5:12 6:12 7:12 8:12 9:12 10:12 11:12 12:12Factor 1.021 1.031 1.042 1.054 1.068 1.083 1.118 1.158 1.202 1.250 1.302 1.357 1.414
Slope Factors
DepthSlope
1:12 1½:12 2:12 2½:12 3:12 3½:12 4:12 4½:12 5:12 6:12 7:12 8:12 9:12 10:12 11:12 12:12 91⁄2" 7⁄8" 1¼" 15⁄8" 2" 23⁄8" 27⁄8" 3¼" 35⁄8" 4" 4¾" 55⁄8" 63⁄8" 71 ⁄8" 8" 8¾" 9½"117⁄8" 1" 1½" 2" 2½" 3" 3½" 4" 4½" 5" 6" 7" 8" 9" 10" 11" 117⁄8"14" 1¼" 1¾" 23⁄8" 3" 3½" 41⁄8" 4¾" 5¼" 57⁄8" 7" 8¼" 93⁄8" 10½" 11¾" 127⁄8" 14"16" 13⁄8" 2" 2¾" 33⁄8" 4" 4¾" 53⁄8" 6" 6¾" 8" 93⁄8" 10¾" 12" 133⁄8" 14¾" 16"18" 1½" 2¼" 3" 3¾" 4½" N.A.20" 15⁄8" 2½" 33⁄8" 41⁄8" 5" N.A.
D Factors
O.C. Spacing
Load in Pounds Per Square Foot (PSF)20 25 30 35 40 45 50 55 60
Load in Pounds Per Linear Foot (PLF)12" 20 25 30 35 40 45 50 55 6016" 27 34 40 47 54 60 67 74 80
19.2" 32 40 48 56 64 72 80 88 9624" 40 50 60 70 80 90 100 110 120
PSF to PLF Metric to Imperial
Actual cut length can be approximated by multiplying the horizontal length by the slope factor and adding the D factor.
D
Horizontal length = L
L x slop
e facto
r
Cut length
Add D factor to obtain proper
cut length
Horizontal clear span
Metric Unit Imperial Conversion1 kN 0.2248 kip1 N 0.2248 lb1 m 3.281 ft
1 mm 0.0394 in.1 kg 2.205 lb mass
1 N • m 0.7376 lb • ft1 N • m 8.851 lb • in.1 mm4 2.402 x 10-6 in.4
1 Pa 0.0209 lb/ft2
1 kPa 0.1450 lb/in.2
Imperial Unit Metric Conversion1 kip 4.448 kN1 lb 4.448 N1 ft 0.3048 m1 in. 25.40 mm
1 lb mass 0.4536 kg1 lb • ft 1.356 N • m1 lb • in. 0.1130 N • m
1 in.4 0.4162 x 106 mm4
1 lb/ft2 47.88 Pa1 lb/in.2 6.895 kPa
Imperial to Metric
Floor PanelsSouthern Pine
½" plywood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.7 psf5⁄8" plywood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.0 psf
¾" plywood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.5 psf
11 ⁄8" plywood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.8 psf
½" OSB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.8 psf5⁄8" OSB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.2 psf
¾" OSB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.7 psf7⁄8" OSB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.1 psf
11 ⁄8" OSB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.1 psfBased on: Southern pine – 40 pcf for plywood, 44 pcf for OSB
Roofing Asphalt shingles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.5 psf
Wood shingles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.0 psf
Clay tile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.0 to 14.0 psf
Slate (3⁄8" thick) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15.0 psf
Roll or Batt Insulation (1" thick):Rock wool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.2 psfGlass wool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.1 psf
Floor FinishesHardwood (nominal 1") . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.0 psf
Sheet vinyl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 psf
Carpet and pad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.0 psf
¾" ceramic or quarry tile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10.0 psf
Concrete:Regular (1") . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12.0 psf
Lightweight (1") . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.0 to 10.0 psfGypsum concrete (¾") . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.5 psf
CeilingsAcoustical fibre tile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.0 psf
½" gypsum board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.2 psf5⁄8" gypsum board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.8 psf
Plaster (1" thick) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.0 psf
Material Weights (Include TJI® weights in dead load calculations—see Design Properties tables on pages 6 and 17 for joist weights)
November 2018 • Reorder TJ-4500 , Weyerhaeuser, Forte, Javelin, Microllam, Parallam, TimberStrand, TJ, TJI, and Trus Joist are registered trademarks and Edge Gold, Flak Jacket, and TJ-Pro are trademarks of Weyerhaeuser NR. © 2018 Weyerhaeuser NR Company. All rights reserved. Printed in the USA.
This document supersedes all previous versions. If this is more than one year old, contact your dealer or Weyerhaeuser rep.
WE CAN HELP YOU BUILD SMARTER
You want to build solid and durable structures—we want to help. Weyerhaeuser provides high-quality building products and unparalleled technical and field assistance to support you and your project from start to finish.
Floors and Roofs: Start with the best framing components in the industry: our Trus Joist® TJI® joists; TimberStrand® LSL rim board; and TimberStrand® LSL, Microllam® LVL, and Parallam® PSL headers and beams. Pull them all together with our self-gapping and self-draining Weyerhaeuser Edge GoldTM floor panels and durable Weyerhaeuser roof sheathing.
Walls: Get the best value out of your framing package—use TimberStrand® LSL studs for tall walls, kitchens, and bathrooms, and our traditional, solid-sawn lumber everywhere else. Cut down installation time by using TimberStrand® LSL headers for doors and windows, and Weyerhaeuser wall sheathing with its handy two-way nail lines.
Software Solutions: Whether you are a design professional or lumber dealer, Weyerhaeuser offers an array of software packages to help you specify individual framing members, create cut lists, manage inventories—even help you design a complete structural frame. Contact your Weyerhaeuser representative to find out how to get the software you need.
Technical Support: Need technical help? Weyerhaeuser has one of the largest networks of engineers and sales representatives in the business. Call us for help, and a skilled member from our team of experts will answer your questions and work with you to develop solutions that meet all your structural framing needs.
CONTACT US
1.888.453.8358 • weyerhaeuser.com/woodproducts/contact
Contact your local representative or dealer at:
Visit weyerhaeuser.com/woodproducts/warranty for copies of this and other Trus Joist® Engineered Wood Product warranties.
Weyerhaeuser provides a limited warranty for the expected life of the structure for all Trus Joist® branded products. Product information, installation instructions, and the full text of each product's limited warranty (including limitations and exclusions) are available on the Weyerhaeuser website, from your Weyerhaeuser representative, or by calling toll free: 888-453-8358.
Additionally, Weyerhaeuser offers limited warranties on a broad variety of its other products. To see complete details of all Weyerhaeuser product warranties, visit weyerhaeuser.com/wood products/warranty.
1.888.453.8358 WEYERHAEUSER.COM/WOODPRODUCTS
PRODUCT WARRANTYL I M I T E D L I F E T I M E
Reorder TJ-1010 December 2016 , Weyerhaeuser, and Trus Joist are registered trademarks of Weyerhaeuser NR. © 2016 Weyerhaeuser NR Company. All rights reserved.
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